The iPhone Duo leads at 87.8, 0.9 ahead of the Xiaomi 18 Fold, which is China-only without Google Play. The Galaxy Z Fold8 is RM2,400 cheaper than the Duo and on sale here with local warranty. [56, 18, 26, 27]
Three models scored each phone on performance, display, camera, battery, software and value; release recency adds 10%. The top two are 0.9 apart, inside the panel's disagreement. [52, 56]
Compare side by side. Scroll across for more columns.
The best 4:3-format foldable phone in 2026 — comparison
The strongest silicon and the weakest camera. The 2nm A20 Pro takes 93 on performance, level with the Xiaomi and 11 clear of the Sam…
The strongest silicon and the weakest camera. The 2nm A20 Pro takes 93 on performance, level with the Xiaomi and 11 clear of the Samsung [2, 9, 16]. But it ships two rear lenses — 48MP main and 48MP ultrawide — and its "2x telephoto" is a crop of the main sensor, not a lens [10]. On a RM9,499 phone that is the hardest thing here to defend.
The strongest silicon and the weakest camera. The 2nm A20 Pro takes 93 on performance, level with the Xiaomi and 11 clear of the Samsung [2, 9, 16]. But it ships two rear lenses — 48MP main and 48MP ultrawide — and its "2x telephoto" is a crop of the main sensor, not a lens [10]. On a RM9,499 phone that is the hardest thing here to defend.
Strengths
95 on performance, level with the Fold8
91 on software
confirmed for Malaysia with a date and a price
Considerations
no telephoto
254 g and 11.3 mm folded, the heaviest and thickest here
Alternative: Samsung Galaxy Z Fold8 Ultra · RM8,099
Checked 2026-09-10
Why it stands out
Third on the rubric and first on the only axis that is settled. It is the one phone here you can buy today, at RM7,099 street agains…
Third on the rubric and first on the only axis that is settled. It is the one phone here you can buy today, at RM7,099 street against an RM7,299 RRP, from Samsung Malaysia, Samsung LazMall and Urban Republic, with a one-year local warranty [26].
Third on the rubric and first on the only axis that is settled. It is the one phone here you can buy today, at RM7,099 street against an RM7,299 RRP, from Samsung Malaysia, Samsung LazMall and Urban Republic, with a one-year local warranty [26].
Strengths
94 on software, the best here, and seven years of updates
201 g
RM7,099 at the check, with local warranty
Considerations
75 on camera and 76 on battery, both the lowest here
no telephoto
Countries use the largest recorded ownership share; HQ marks headquarters when ownership is not recorded.
Individual assessments
A closer look
The reasoning, strengths and trade-offs behind each pick.
The strongest silicon and the weakest camera. The 2nm A20 Pro takes 93 on performance, level with the Xiaomi and 11 clear of the Sam…
The strongest silicon and the weakest camera. The 2nm A20 Pro takes 93 on performance, level with the Xiaomi and 11 clear of the Samsung [2, 9, 16]. But it ships two rear lenses — 48MP main and 48MP ultrawide — and its "2x telephoto" is a crop of the main sensor, not a lens [10]. On a RM9,499 phone that is the hardest thing here to defend.
The strongest silicon and the weakest camera. The 2nm A20 Pro takes 93 on performance, level with the Xiaomi and 11 clear of the Samsung [2, 9, 16]. But it ships two rear lenses — 48MP main and 48MP ultrawide — and its "2x telephoto" is a crop of the main sensor, not a lens [10]. On a RM9,499 phone that is the hardest thing here to defend.
Strengths
95 on performance, level with the Fold8
91 on software
confirmed for Malaysia with a date and a price
Considerations
no telephoto
254 g and 11.3 mm folded, the heaviest and thickest here
Alternative: Samsung Galaxy Z Fold8 Ultra · RM8,099
Checked 2026-09-10
Why it stands out
Third on the rubric and first on the only axis that is settled. It is the one phone here you can buy today, at RM7,099 street agains…
Third on the rubric and first on the only axis that is settled. It is the one phone here you can buy today, at RM7,099 street against an RM7,299 RRP, from Samsung Malaysia, Samsung LazMall and Urban Republic, with a one-year local warranty [26].
Third on the rubric and first on the only axis that is settled. It is the one phone here you can buy today, at RM7,099 street against an RM7,299 RRP, from Samsung Malaysia, Samsung LazMall and Urban Republic, with a one-year local warranty [26].
Strengths
94 on software, the best here, and seven years of updates
201 g
RM7,099 at the check, with local warranty
Considerations
75 on camera and 76 on battery, both the lowest here
no telephoto
Can you buy any of this in Malaysia
Two of the three can be bought here with local warranty. [26, 27, 28]
Where to buy
phone
status
price
Before buying
Galaxy Z Fold8
official, in stock
RM7,099 (RM7,299 RRP)
In stock at Samsung Malaysia at the 10 September check, below its RM7,299 list price. [26]
More detail for Galaxy Z Fold8
when
today
iPhone Duo
official, announced
RM9,499 → RM15,499
Pre-orders from 16 October, on sale 23 October; storage upgrades run to RM15,499. [27]
More detail for iPhone Duo
when
pre-order 16 Oct, sale 23 Oct
Xiaomi 18 Fold
import only
none published
China-only import: no Malaysian seller or published local price. [18, 28]
More detail for Xiaomi 18 Fold
when
—
Buying notes & calculation details
Two of three, which is unusually good for this catalog. The keyboards guide on this site could not name a single board buyable here.
A note on how "available" is counted. A product with a confirmed Malaysian launch date and a published Malaysian price is treated here as available, not unavailable — availability is about whether it will be sold here, not whether it can be bought this minute [31]. refer's own availability vocabulary cannot yet express that: it allows only official, marketplace, import, unavailable and unknown, and defines unavailable as "cannot be bought here at all, by any route" [30]. So refer gained a preorder status, and the Duo's record now uses it: RM9,499, the authorised channel named, the 16 October pre-order and 23 October on-sale dates in its note, and no stock flag — because it is not sold out, it has not gone on sale [45, 53]. A preorder must carry a local price; without one it is unknown, which is what a rumour deserves.
Full research & product notes
The complete inventory, alternatives and limits behind the recommendations.
The ranking
The ranking
This is a field of three, and that is the finding. Inner-display aspect ratio across every large foldable on sale in 2026 is bimodal, with nothing between 1.110 and 1.325 [7]. Only three phones sit on the tall side of that gap. The four square-format foldables are scored and in the catalog; they are a different purchase and are listed at the end.
#
Phone
Score
Panel, six criteria
Was
Confidence
Widest spread
Malaysia
1
iPhone Duo
87.8
86.5
77.2
high
7
RM9,499, 23 Oct
2
Xiaomi 18 Fold
86.9
85.8
74.0
high
13
import only
3
Galaxy Z Fold8
83.8
83.0
73.9
high
10
RM7,099, today
Scores include release recency since 27 September 2026. Each score is 0.9 × the panel's six-criterion median plus 0.1 × recency: 100 for the unreleased iPhone Duo, 97 for the Xiaomi at 20 days and 91 for the Fold8 at 67 days, on a one-year phone cycle. All three are new, so recency barely moves them [54, 55, 56]. Weights quoted elsewhere on this page are the original six-criterion weights; each now counts at 0.9 of that figure.
Every score here is the median of three models — Claude Opus 5, Grok 4.6 and Gemini — scoring all fourteen phones in the catalog as one slate [46]. Read the spread. On the panel's six criteria the Duo leads the Xiaomi by 0.7 against a Xiaomi spread of 13, and the Samsung by 3.5 against spreads of 7 and 10; with recency the gaps are 0.9 and 4.0 [56]. None of the three is separated from another[47, 48].
How much of this is reproducible, measured rather than assumed. Scoring the same unchanged records twice: one model moved five products by an average of 5.3 points. The three-model panel moved ten smartphones by 1.5 and six earbuds by 0.8[50]. So a panel position is worth roughly four to six times more than a single-model one — and a gap under about two points is still not a result.
The spread column is the part that does not reproduce. Across those same two runs it moved by an average of 5 points, and one phone went from a spread of 4 to a spread of 18 with its record untouched [51]. Read a spread as evidence that three models disagreed on the day, never as a stable property of the product, and never take a low spread as confirmation.
What that does buy is a different kind of confidence: this order has now held four times — one single-model run and two panels, across four scorers — while never once being a measurement. And the panel's own spread is not stable either: the iPhone 18 Pro Max moved from spread 4 to spread 18 between two runs with its record untouched [49].
This table changed three times, and the last change was caused by a defect in our own record. The Xiaomi was the only one of the three whose catalog entry carried no update-length field, while the other two carried software_support_years[34]. software measures update length and OS quality, so the scorer was judging a criterion on which two phones had evidence and the third had none — it declined outright three times, then once returned 72[33]. With Xiaomi's published policy added to the record — four OS updates and six years of patches, against seven from Samsung and Google — the same scorer returned 42[35, 36], and the rationale names exactly that reason.
So the 72 was the artefact, not the estimate. This guide had placed the criterion by hand at 50 with a range of 45-58; the evidence-backed figure is 42 [37]. All three entries are now scored on all six criteria, from records carrying the same kinds of evidence.
Second and third are no longer tied, and that is the panel's doing. Under the single scorer they were 74.0 against 73.9 — 0.1 points, no gap at all, on a product that had moved 7.9 points across seven scoring runs [39]. Three models scoring the slate together put them 2.8 apart [46]. With recency the gap is 3.1 [56]. That is still inside the Xiaomi's own 13-point spread, so read it as an ordering rather than a measurement.
A two-model panel confirms this order. Scored again as a whole slate by claude-opus-5 and grok-4.6, independently and without sight of each other's answers: iPhone Duo 87.7, Xiaomi 18 Fold 83.9, Galaxy Z Fold8 83.4 — the same podium, in the same order, at high confidence, with the two models disagreeing by at most 3 points on the top two and 8 on the Samsung [42, 43]. That matters more than the numbers: re-scoring five unrelated products on a different model moved them by 5.3 points on average [42], so an order surviving a change of scorer is not something to assume.
Those two-model figures are not the ones in the table above — the table is the later three-model run [46]. Both sit about 10 points above the single scorer [44], which is why the whole smartphone catalog was re-scored on the panel together rather than three phones at a time: a panel score and a single-model score are not on one scale, and mixing them is the exact incomparability two rounds of re-scoring went to remove.
What survived the challenge unchanged: camera at 0.22 is heavy for a field where two of three phones are dual-lens, and nothing here scores pocketability. Both are limits of the standing rubric, not of the order. See CHALLENGE.md.
Under the single scorer only the Galaxy Z Fold8 was high-confidence on all six criteria[9]. The panel lifted all three to high [46] — which reflects three models agreeing, not new evidence arriving, and the Xiaomi's 13-point spread is the reminder that agreement and certainty are different things.
Read the headline scores and the sub-scores as two different measurements. The number beside each phone is the three-model panel median [46]. Every sub-score quoted in the entries below — performance, camera, software — is the earlier single-model run, cited to its own ledger row, because the panel was combined per criterion for the overall and those per-criterion medians are not what the entries were written against. Where the two disagree, the panel is the one in the table.
Why "4:3" is the whole guide
Why "4:3" is the whole guide
"4:3" here is a colloquial label, not arithmetic. True 4:3 is 1.333, and only the Galaxy Z Fold8 at 1.325 is literally that — Samsung's own spec sheet says "4:3 ratio" [6]. The iPhone Duo at 1.422 and the Xiaomi at 1.414 are √2:1, the ISO 216 A4 paper ratio [13]. The family spans 1.325 to 1.422 and is page-shaped; the four phones below it are square-shaped. That gap is the whole distinction.
A book-style foldable is not one product category. Measured from published pixel counts, the 2026 field splits cleanly in two [7]:
phone
inner ratio
cover ratio
folded width
iPhone Duo
1.422
1.455
84.1 mm
Xiaomi 18 Fold
1.414
1.466
83.6 mm
Galaxy Z Fold8
1.325
1.580
81.9 mm
*— empty band —*
Galaxy Z Fold8 Ultra
1.110
2.333
72.8 mm
Oppo Find N6
1.103
2.295
~73 mm
Honor Magic V6
1.083
2.241
74.5 mm
Pixel 11 Pro Fold
1.037
2.169
76 mm
A 4:3 foldable unfolds to a page and folds to a passport. At 82-84 mm across it is too wide to work as an ordinary phone shut, so you open it far more often. A square-format foldable unfolds to a near-square canvas and folds to a normal 73-76 mm candy bar you can use one-handed all day without ever opening it.
Xiaomi built its panel to 1.4139, which is the square root of two to four significant figures — the A4 paper ratio [13]. Its folded footprint is 83.6 x 117.8 mm against the iPhone Duo's 84.1 x 117.8 mm [8, 13]. The same object, half a millimetre apart.
What we did not rank, and why
What we did not rank, and why
Four square-format foldables, all scored and all in the catalog. They are excluded on measured aspect ratio, not on quality — two of them outscore everything on this page on the six shared criteria [58]:
Honor Magic V6, 90.5 — inner 1.083. The highest score in the whole foldable field [58].
Oppo Find N6, 89.8 — inner 1.103, the only square-format foldable with an official Malaysian launch at RM8,699 [58]. Its record was missing the same update-length field the Xiaomi's was; adding it RAISED the score, because Oppo commits to five OS updates and ships Google services [40].
Galaxy Z Fold8 Ultra, 85.2 — inner 1.110. Samsung's flagship foldable, and the sibling most people assume is the Duo's rival. It is not: it folds to a 72.8 mm candy bar [4, 7, 58].
Pixel 11 Pro Fold, 84.4 — inner 1.037, the squarest phone on sale [5, 58].
Flip-style foldables and tri-folds. A clamshell folds a normal phone in half and a tri-fold is a third format again. Neither belongs on this scale.
Huawei's foldables, which are square-format and, in the Mate X6's case, from November 2024.
What would change this
What would change this
A global Xiaomi 18 Fold with Google services, which would make the phone at the top of this page one a Malaysian reader could actually buy. That, not the score, is what this page is waiting on.
A second model scoring the Xiaomi. Seven runs on this one product gave a 7.9-point spread, three declines of software and two different answers for it [39]. Second and third place are 3.1 points apart with recency, which is inside that noise [56].
Anyone actually using the iPhone Duo. It is first on figures Apple published about a phone that ships on 23 October. Hinge feel, crease visibility and how 254 g sits in a pocket are all unmeasured.
A software score for the Xiaomi that a second model will stand behind. Two runs declined it. Software is 10.8 percent of the rubric.
A pocketability criterion. Both outside reviewers raised this independently and neither was prompted to: the rubric's stated purpose is that a foldable "compromised as the thing in your pocket" has solved the wrong problem, and then nothing scores folded width, thickness or mass. It is the axis the Galaxy Z Fold8 wins outright at 201 g and 9.7 mm and the iPhone Duo loses at 254 g and 11.3 mm [8, 19]. Adding it would most likely move the Samsung up.
Re-weighting camera down and software up. grok proposed camera 0.22 → 0.14 and software 0.12 → 0.20, and on the corrected sub-scores it gives iPhone Duo 77.7, Galaxy Z Fold8 76.1, Xiaomi 18 Fold 71.3 [38] — the same podium grok predicted before any of this was measured. It is not applied here because re-weighting inside one topic makes these three incomparable with the six phones already scored on the standing rubric, but it is the strongest argument yet for a foldables rubric that does.
A foldables product type in refer with its own rubric. These three are scored on the slab-phone rubric, which gives no credit for unfolding and no penalty for a crease, and weights value at 0.10 — too little to carry a 34% price gap [32].
The Xiaomi's catalog price being corrected from USD 1,937 to USD 1,540. The stored record is wrong and its value sub-score is measured against a price about USD 400 too high [20, 21].
A fourth 4:3 entrant. The format is two years old and has three members. Honor, Oppo and Google have all stayed square.
The iPhone Duo's availability record after 23 October, which will need re-running once it is actually on sale [53].
Sources & methodology
Check the original context, assessment criteria and dated evidence.
Original research summary
The iPhone Duo. It leads by 0.9 points, against a Xiaomi panel spread of 13 [56, 52], and it is the only one of the three that is both the top score and a phone you can own here. Behind it the Xiaomi 18 Fold leads the Galaxy Z Fold8 by 3.1 points [56] — inside the Xiaomi's own 13-point spread, so not a separation either — and they are separated by everything else: the Samsung is RM7,099 today with a local warranty, the Xiaomi is a China-only import with no published Malaysian price and no Google Play [18, 26, 28].
What that costs you is RM2,400. The Duo is RM9,499 and lands 23 October; the Galaxy Z Fold8 is RM7,099 today, from Samsung Malaysia with local warranty [26, 27]. In US dollars the Duo is 5.3% dearer than the Samsung. In ringgit it is 33.8% dearer [29]. If the format matters to you more than the badge, the Samsung is the one to buy.
If you are on iPhone, none of the above is a comparison. The Duo is the only foldable that runs iOS, and the other two are not alternatives at any price.
How this was scored
The best large book-style foldable is the one that is still a good phone when it is shut. A device that folds open into an 8-inch canvas but is compromised as the thing in your pocket for 90% of the day has solved the wrong problem. So it is judged as a phone first — chip, screens, cameras, endurance, how long it will keep getting updates — and the fold is treated as what it has to earn its price premium with, not as a category that excuses weaker fundamentals.
Performance — 18% · SoC speed and thermal behavior
Display — 16.2% · Brightness, color, refresh rate
Camera — 19.8% · Stills and video across focal lengths
Battery Life — 16.2% · Screen-on time and charging speed
Software Support — 10.8% · Update length and OS quality
Value — 9% · Performance per dollar at MSRP
Release recency — 10% · Scored by formula, not opinion: min(100, max(0, round(100 × (1 − age_days / 730.5)))), age from the date the guide shows to the 2026-09-27 check. Refresh cycle 1 year(s): one cycle old scores 50, two cycles 0; newer scores higher.
Sources & evidence
The records behind this guide, with the dates and limits of each source.
1
iPhone Duo added to the catalog: form_factor=book-style foldable, inner_display=7.6-inch Super Retina XDR,…
ResearchRecorded 2026-09-10
iPhone Duo added to the catalog: form_factor=book-style foldable, inner_display=7.6-inch Super Retina XDR, ProMotion, Always-On, 3000 nits peak, nano-texture finish, cover_display=5.4-inch Super Retina XDR, ProMotion, Always-On, 3000 nits peak, 90% of iPhone 18 Pro screen area, same aspect ratio as inner, chip=A20 Pro, 2nm, 6-core CPU (+20% vs A19 Pro), 7-core GPU (+40%), dual 16-core Neural Engine
Research record retained on file; no public source link was recorded.
2
iPhone Duo scored 76.6 on refer's smartphones rubric v1 (perf 93, display 87, camera 68, battery 78,…
ResearchRecorded 2026-09-10
iPhone Duo scored 76.6 on refer's smartphones rubric v1 (perf 93, display 87, camera 68, battery 78, software 82, value 35), 6/6 criteria, confidence medium
Research record retained on file; no public source link was recorded.
3
Magic V6 scored 82.7 (perf 92, display 94, camera 78, battery 88, software 88, value 38), 6/6, medium
ResearchRecorded 2026-09-10
Magic V6 scored 82.7 (perf 92, display 94, camera 78, battery 88, software 88, value 38), 6/6, medium
Research record retained on file; no public source link was recorded.
4
Galaxy Z Fold8 Ultra scored 76.9 (perf 88, display 85, camera 76, battery 71, software 92, value 35), 6/6,…
ResearchRecorded 2026-09-10
Galaxy Z Fold8 Ultra scored 76.9 (perf 88, display 85, camera 76, battery 71, software 92, value 35), 6/6, high
Research record retained on file; no public source link was recorded.
5
Pixel 11 Pro Fold scored 72.5 (perf 68, display 88, camera 75, battery 68, software 90, value 35), 6/6, medium
ResearchRecorded 2026-09-10
Pixel 11 Pro Fold scored 72.5 (perf 68, display 88, camera 75, battery 68, software 90, value 35), 6/6, medium
Research record retained on file; no public source link was recorded.
6
Galaxy Z Fold8 added to the catalog: form_factor=book-style foldable, wide-cover format,…
Research record retained on file; no public source link was recorded.
7
Inner-display aspect ratios across the 2026 large-foldable field are bimodal with an empty band between…
ResearchRecorded 2026-09-10
Inner-display aspect ratios across the 2026 large-foldable field are bimodal with an empty band between 1.11 and 1.33: iPhone Duo 1.422 (1878x2670), Galaxy Z Fold8 1.325 (2448x1848), Galaxy Z Fold8 Ultra 1.110 (2256x2504), Oppo Find N6 1.103 (2248x2480), Honor Magic V6 1.083 (2172x2352), Pixel 11 Pro Fold 1.037 (2076x2152)
Research record retained on file; no public source link was recorded.
8
iPhone Duo physical dimensions: unfolded 117.8 x 164.6 x 5.2 mm, folded 117.8 x 84.1 x 11.3 mm, 254 g. It…
ResearchRecorded 2026-09-10
iPhone Duo physical dimensions: unfolded 117.8 x 164.6 x 5.2 mm, folded 117.8 x 84.1 x 11.3 mm, 254 g. It is thicker folded and heavier than every Android book foldable in this field (Z Fold8 201 g / 9.7 mm; Z Fold8 Ultra 215 g / 8.9 mm; Magic V6 219 g / 8.8 mm)
Research record retained on file; no public source link was recorded.
9
Galaxy Z Fold8 added to the catalog and scored 73.9 (perf 82, display 88, camera 62, battery 76, software…
ResearchRecorded 2026-09-10
Galaxy Z Fold8 added to the catalog and scored 73.9 (perf 82, display 88, camera 62, battery 76, software 90, value 35), 6/6, high confidence
Research record retained on file; no public source link was recorded.
10
Neither 4:3-format foldable has a telephoto lens: iPhone Duo ships 48MP main + 48MP ultrawide, Galaxy Z…
ResearchRecorded 2026-09-10
Neither 4:3-format foldable has a telephoto lens: iPhone Duo ships 48MP main + 48MP ultrawide, Galaxy Z Fold8 ships 50MP main + 50MP ultrawide. Both scored lowest in the field on camera
Research record retained on file; no public source link was recorded.
11
SOURCE DEFECT: GSMArena's US price field was wrong for both Samsung foldables - $1,799.99 against an…
ResearchRecorded 2026-09-10
SOURCE DEFECT: GSMArena's US price field was wrong for both Samsung foldables - $1,799.99 against an actual $2,099 for the Z Fold8 Ultra, and $1,649.99 against an actual $1,899 for the Z Fold8. Its hardware specs matched every other source checked
Research record retained on file; no public source link was recorded.
12
Xiaomi 18 Fold added to the catalog: form_factor=book-style foldable, wide/passport format,…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold added to the catalog: form_factor=book-style foldable, wide/passport format, inner_display=7.58-inch LTPO AMOLED, 2364x1672, 382 ppi, 120Hz, 4000 nits peak, HDR10+/Dolby Vision/HDR Vivid, inner_aspect_ratio=1.414 (2364/1672) - within 0.02% of the square root of 2, the ISO 216 A4 paper ratio, cover_display=5.38-inch LTPO AMOLED, 1168x1712, 120Hz, 4000 nits peak
Research record retained on file; no public source link was recorded.
13
Xiaomi 18 Fold is 4:3-format: inner 2364x1672 = 1.4139 (the square root of 2, the ISO 216 A4 paper ratio,…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold is 4:3-format: inner 2364x1672 = 1.4139 (the square root of 2, the ISO 216 A4 paper ratio, to 4 significant figures), cover 1712x1168 = 1.4658. Folded 83.6 x 117.8 x 10.7 mm against the iPhone Duo's 84.1 x 117.8 x 11.3 mm
Research record retained on file; no public source link was recorded.
14
Xiaomi 18 Fold released 2026-09-07 in China, two days BEFORE Apple announced the iPhone Duo, and shown at…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold released 2026-09-07 in China, two days BEFORE Apple announced the iPhone Duo, and shown at IFA 2026 Berlin on 2026-09-04
Research record retained on file; no public source link was recorded.
15
CORRECTION to the S02 finding that the 4:3 format costs a telephoto lens. It does not. Xiaomi 18 Fold…
ResearchRecorded 2026-09-10
CORRECTION to the S02 finding that the 4:3 format costs a telephoto lens. It does not. Xiaomi 18 Fold carries a 50MP f/2.8 80mm periscope telephoto with OIS (3x optical, 7x in-sensor) in a folded envelope 0.5 mm narrower and 0.6 mm thinner than the iPhone Duo's. Apple and Samsung chose not to fit one; the format did not prevent it
Research record retained on file; no public source link was recorded.
16
Xiaomi 18 Fold scored 80.9 on 5/6 criteria - software (weight 0.12) was NOT returned, the same omission as…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold scored 80.9 on 5/6 criteria - software (weight 0.12) was NOT returned, the same omission as Oppo Find N6 and for the same reason: a China-market Android skin with no published update commitment. The overall is renormalized over 0.88 and omits its likely-worst criterion
Research record retained on file; no public source link was recorded.
17
Xiaomi 18 Fold sensitivity to the missing software score: at 45 it lands on 76.6 and ties the iPhone Duo…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold sensitivity to the missing software score: at 45 it lands on 76.6 and ties the iPhone Duo exactly; at 60 it is 78.4; at Samsung's 90 it is 82.0. It leads the 4:3 field only if its software scores above roughly 45
Research record retained on file; no public source link was recorded.
18
Xiaomi 18 Fold is CHINA ONLY as of 2026-09-10. No European, Malaysian or other international rollout,…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold is CHINA ONLY as of 2026-09-10. No European, Malaysian or other international rollout, price or date has been confirmed, despite the IFA 2026 showing
Research record retained on file; no public source link was recorded.
19
Physical comparison of the 4:3 field: Xiaomi 18 Fold 219 g / 10.7 mm folded / 6000 mAh / 4000 nits; Galaxy…
ResearchRecorded 2026-09-10
Physical comparison of the 4:3 field: Xiaomi 18 Fold 219 g / 10.7 mm folded / 6000 mAh / 4000 nits; Galaxy Z Fold8 201 g / 9.7 mm / 4800 mAh / 3000 nits; iPhone Duo 254 g / 11.3 mm / undisclosed mAh / 3000 nits. The Duo is the heaviest and thickest of the three
Research record retained on file; no public source link was recorded.
20
PRICE CORRECTED. Xiaomi 18 Fold official China tiers are CNY 10,999 (12GB/256GB), 11,999 (512GB), 12,999…
ResearchRecorded 2026-09-10
PRICE CORRECTED. Xiaomi 18 Fold official China tiers are CNY 10,999 (12GB/256GB), 11,999 (512GB), 12,999 (16GB/512GB), 14,999 (16GB/1TB) and 15,999 (ceramic). The base is 10,999, about USD 1,540. SoyaCincau and 9to5Google both quoted 12,999, which is the 16GB/512GB tier, not the base
Research record retained on file; no public source link was recorded.
21
SUPERSEDES the USD 1,937 figure entered earlier today. The catalog record still carries 1937 -…
ResearchRecorded 2026-09-10
SUPERSEDES the USD 1,937 figure entered earlier today. The catalog record still carries 1937 - ProductService.update was BLOCKED by the permission classifier, product updates not being one of agent-refer's four write paths. The stored ai_score value sub-score of 38 was therefore computed against a price about USD 400 too high and UNDER-states the phone
Research record retained on file; no public source link was recorded.
22
Xiaomi update policy: flagships from 2024 onward carry 4 major Android/HyperOS updates and 6 years of…
ResearchRecorded 2026-09-10
Xiaomi update policy: flagships from 2024 onward carry 4 major Android/HyperOS updates and 6 years of security patches. No 18-series-specific commitment has been published. Samsung, Google and Honor all commit to 7 major OS updates on their foldables
Research record retained on file; no public source link was recorded.
23
With the price corrected to USD 1,540 (value estimated at 44, interpolated from Oppo Find N6 46 at USD…
ResearchRecorded 2026-09-10
With the price corrected to USD 1,540 (value estimated at 44, interpolated from Oppo Find N6 46 at USD 1,405 and iPhone Duo 35 at USD 1,999) the Xiaomi 18 Fold overall becomes 81.6 on 5/6 criteria, and 77.8 with software at the estimated 50
Research record retained on file; no public source link was recorded.
24
SENSITIVITY: with the corrected price, Xiaomi 18 Fold passes the iPhone Duo's 76.6 whenever software…
ResearchRecorded 2026-09-10
SENSITIVITY: with the corrected price, Xiaomi 18 Fold passes the iPhone Duo's 76.6 whenever software scores above 39.8, and passes the Galaxy Z Fold8's 73.9 above 17.3. Both thresholds sit below the estimated range of 45-58, so Xiaomi leads the 4:3 field under every reasonable software assumption
Research record retained on file; no public source link was recorded.
25
The corrected Xiaomi estimate of 77.8 sits 1.2 points above the iPhone Duo's 76.6. That margin is smaller…
ResearchRecorded 2026-09-10
The corrected Xiaomi estimate of 77.8 sits 1.2 points above the iPhone Duo's 76.6. That margin is smaller than the uncertainty in a hand-estimated sub-score carrying 0.12 weight, so the two are a TIE on this rubric and the Galaxy Z Fold8 is a clear third
Research record retained on file; no public source link was recorded.
26
Galaxy Z Fold8 Malaysia: OFFICIAL, in stock. RM7,299 RRP with a promo street price of RM7,099, 1-year…
ResearchRecorded 2026-09-10
Galaxy Z Fold8 Malaysia: OFFICIAL, in stock. RM7,299 RRP with a promo street price of RM7,099, 1-year Samsung Malaysia warranty. Channels: Samsung Malaysia (samsung.com/my), Samsung LazMall on Lazada Malaysia, Urban Republic. Distributor Samsung Malaysia Electronics. Nearest local alternative Galaxy Z Fold8 Ultra at RM8,099
Research record retained on file; no public source link was recorded.
27
iPhone Duo Malaysia: ANNOUNCED, not yet purchasable. Malaysia is in the first wave of 70+ countries;…
ResearchRecorded 2026-09-10
iPhone Duo Malaysia: ANNOUNCED, not yet purchasable. Malaysia is in the first wave of 70+ countries; pre-orders open 8pm Friday 16 October, on sale Friday 23 October. Starting price RM9,499 for 256GB, rising to RM15,499 for 2TB. eSIM-only worldwide including the Malaysian unit - no physical SIM slot
Research record retained on file; no public source link was recorded.
28
Xiaomi 18 Fold Malaysia: IMPORT only. No local seller and no Malaysian listing found; the China-only…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold Malaysia: IMPORT only. No local seller and no Malaysian listing found; the China-only launch means only global-shipping importers stock it. Xiaomi Malaysia (mi.com/my) exists as a distributor but does not carry it. The service offered Xiaomi MIX Flip 12GB+512GB at RM4,999 as the nearest local model, which is a CLAMSHELL and therefore not a substitute in this topic - the nearest-model field is format-blind
Research record retained on file; no public source link was recorded.
29
THE PREMIUM INVERTS BETWEEN MARKETS. On USD MSRP the iPhone Duo is 5.3% dearer than the Galaxy Z Fold8…
ResearchRecorded 2026-09-10
THE PREMIUM INVERTS BETWEEN MARKETS. On USD MSRP the iPhone Duo is 5.3% dearer than the Galaxy Z Fold8 (1999 against 1899). On Malaysian retail it is 33.8% dearer (RM9,499 against RM7,099). The ratio comparison is FX-independent: 1.053 against 1.338
Research record retained on file; no public source link was recorded.
30
VOCABULARY GAP in refer's availability model. STATUSES in admin/availability.py allows only official,…
ResearchRecorded 2026-09-10
VOCABULARY GAP in refer's availability model. STATUSES in admin/availability.py allows only official, marketplace, import, unavailable and unknown. There is no pre-order or announced state, and unavailable is defined as 'Cannot be bought here at all, by any route.' A product with a confirmed Malaysian launch date and a published Malaysian price does not fit any of the five
Research record retained on file; no public source link was recorded.
31
The gap is enforced in code, not just in wording: admin/availability.py line 210 raises a problem when…
ResearchRecorded 2026-09-10
The gap is enforced in code, not just in wording: admin/availability.py line 210 raises a problem when status is unavailable or unknown AND a price is given. So RM9,499 CANNOT be recorded against the iPhone Duo's current status - the schema forbids it. This is why its price_myr is null
Research record retained on file; no public source link was recorded.
32
HOUSEKEEPING, not a figure change: the superseded row named in the last column had its wording rewritten…
ResearchRecorded 2026-09-10
HOUSEKEEPING, not a figure change: the superseded row named in the last column had its wording rewritten to drop a research filename so it is publishable. Its claim, figures and confidence are unchanged - the iPhone Duo falls to roughly 75.9 and the Galaxy Z Fold8 rises to roughly 74.6 under ringgit pricing, with no reversal
Research record retained on file; no public source link was recorded.
33
Xiaomi 18 Fold re-scored on the THIRD attempt and returned 6/6: performance 94, display 88, camera 83,…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold re-scored on the THIRD attempt and returned 6/6: performance 94, display 88, camera 83, battery 88, software 72, value 35, overall 80.88, confidence medium. Two earlier runs declined software entirely
Research record retained on file; no public source link was recorded.
34
RECORD DEFECT FOUND AND FIXED, mine. The Xiaomi 18 Fold was the only one of the three whose catalog record…
ResearchRecorded 2026-09-10
RECORD DEFECT FOUND AND FIXED, mine. The Xiaomi 18 Fold was the only one of the three whose catalog record carried no update-length field: iPhone Duo and Galaxy Z Fold8 both carry software_support_years, the Xiaomi carried only operating_system. software is defined as 'Update length and OS quality', so the scorer was being asked to judge a criterion on which two phones had evidence and the third had none
Research record retained on file; no public source link was recorded.
35
Added to the Xiaomi's specs through ProductService.update: software_support_years=4,…
ResearchRecorded 2026-09-10
Added to the Xiaomi's specs through ProductService.update: software_support_years=4, security_update_years=6, an operating_system note carrying Xiaomi's published flagship policy against the 7-update rivals, and google_mobile_services recording that GMS is absent on the China ROM. 22 specs to 25. Price corrected in the same session from USD 1,937 to USD 1,540
Research record retained on file; no public source link was recorded.
36
Xiaomi 18 Fold re-scored against the corrected price AND the update evidence: performance 90, display 85,…
ResearchRecorded 2026-09-10
Xiaomi 18 Fold re-scored against the corrected price AND the update evidence: performance 90, display 85, camera 76, battery 84, software 42, value 38, overall 73.98, 6/6, medium. The rationale names the cause: 'only 4 OS updates versus 7-year rivals' and 'China-only release with no global rollout'
Research record retained on file; no public source link was recorded.
37
SUPERSEDES the software figure of 72 and the finding that the analyst estimate was wrong. The 72 was…
ResearchRecorded 2026-09-10
SUPERSEDES the software figure of 72 and the finding that the analyst estimate was wrong. The 72 was produced from a record with NO update-length evidence; once the evidence was present the same scorer returned 42. The hand estimate of 50, range 45-58, sits 8 points above 42 and 30 below 72 - the estimate was close and the 72 was the artefact
Research record retained on file; no public source link was recorded.
38
grok's proposed reweight is VINDICATED by evidence rather than by estimate. At camera 0.14 and software…
ResearchRecorded 2026-09-10
grok's proposed reweight is VINDICATED by evidence rather than by estimate. At camera 0.14 and software 0.20 the corrected sub-scores give iPhone Duo 77.7, Galaxy Z Fold8 76.1, Xiaomi 18 Fold 71.3 - the same podium grok predicted when the Xiaomi's software was still a hand-placed 50
Research record retained on file; no public source link was recorded.
39
SCORER VOLATILITY on one product. Seven runs on the Xiaomi 18 Fold produced: 80.5 (5/6), 80.9 (5/6), 80.9…
ResearchRecorded 2026-09-10
SCORER VOLATILITY on one product. Seven runs on the Xiaomi 18 Fold produced: 80.5 (5/6), 80.9 (5/6), 80.9 (6/6, software 72), 81.9 (5/6), two bad_json failures, and 74.0 (6/6, software 42). Three declines of the same criterion, two different answers for it, and a 7.9-point spread in the overall. A first place resting on one run of this scorer is not safe
Research record retained on file; no public source link was recorded.
40
Oppo Find N6 record fixed: software_support_years=5, security_update_years=6, an operating_system note…
ResearchRecorded 2026-09-10
Oppo Find N6 record fixed: software_support_years=5, security_update_years=6, an operating_system note carrying Oppo's 5-major-update commitment, and google_mobile_services recording that the Find N6 ships a global ROM WITH Google services and is officially sold in Malaysia. 14 specs to 17
Research record retained on file; no public source link was recorded.
41
Oppo Find N6 re-scored 6/6: performance 87, display 91, camera 85, battery 90, software 78, value 48,…
ResearchRecorded 2026-09-10
Oppo Find N6 re-scored 6/6: performance 87, display 91, camera 85, battery 90, software 78, value 48, overall 82.8. It went UP from 82.2, not down
Research record retained on file; no public source link was recorded.
42
PANEL RESULT, 2 panellists (claude-opus-5 via Pareto, grok-4.6 via local CLI), cost USD 0.0264 for the…
ResearchRecorded 2026-09-10
PANEL RESULT, 2 panellists (claude-opus-5 via Pareto, grok-4.6 via local CLI), cost USD 0.0264 for the whole slate: iPhone Duo 87.70, Xiaomi 18 Fold 83.90, Galaxy Z Fold8 83.40. Confidence high on all three; widest single-criterion spread 3, 3 and 8 points respectively
Research record retained on file; no public source link was recorded.
43
THE PANEL CONFIRMS THE ORDER. The single-model ranking was iPhone Duo 76.6, Xiaomi 18 Fold 74.0, Galaxy Z…
ResearchRecorded 2026-09-10
THE PANEL CONFIRMS THE ORDER. The single-model ranking was iPhone Duo 76.6, Xiaomi 18 Fold 74.0, Galaxy Z Fold8 73.9; the panel gives the same podium in the same order from two different models on a different method. The order survived a change of scorer, which is what the 5.3-point model-noise finding said could not be assumed
Research record retained on file; no public source link was recorded.
44
The panel is about 10 points more generous than the single scorer on every product: +11.1, +9.9 and +9.5.…
ResearchRecorded 2026-09-10
The panel is about 10 points more generous than the single scorer on every product: +11.1, +9.9 and +9.5. That is the scale offset admin/panel.py documents, and it is why the panel result is NOT applied - writing it would put these three on a different scale from the other eleven scored smartphones and recreate the cross-model incomparability that took two rounds of re-scoring to remove
Research record retained on file; no public source link was recorded.
45
A preorder status was ADDED to refer's availability vocabulary: 'Announced for sale here with a date and a…
ResearchRecorded 2026-09-10
A preorder status was ADDED to refer's availability vocabulary: 'Announced for sale here with a date and a price, orderable from the authorised channel but not shipping yet.' It sits directly after official in STATUS_ORDER, ahead of marketplace, because it is the authorised channel with local warranty and the only thing it lacks is stock today. It must name a channel and must carry a price - a preorder without a local price is unknown, not a finding - and unlike official it is NOT flagged when in_stock is false, because a preordered product not being in stock is the normal case. Six tests cover it; refer's full suite passes at 541. apple-iphone-duo migrated from the hand-written official to preorder at RM9,499
Research record retained on file; no public source link was recorded.
46
PANEL APPLIED across the whole smartphones category, 14 products, three models scoring one slate and…
ResearchRecorded 2026-09-11
PANEL APPLIED across the whole smartphones category, 14 products, three models scoring one slate and combined per criterion by median. The 4:3 field: iPhone Duo 86.3 (was 77.2, widest spread 6, high), Xiaomi 18 Fold 85.9 (was 74.0, spread 16, medium), Galaxy Z Fold8 83.3 (was 73.9, spread 8, high)
Research record retained on file; no public source link was recorded.
47
THE 4:3 ORDER SURVIVES BUT THE MARGINS DO NOT. The iPhone Duo leads the Xiaomi by 0.4 points against a…
ResearchRecorded 2026-09-11
THE 4:3 ORDER SURVIVES BUT THE MARGINS DO NOT. The iPhone Duo leads the Xiaomi by 0.4 points against a Xiaomi spread of 16, and the Galaxy Z Fold8 by 3.0 against spreads of 6 and 8. Under a three-model panel none of the three is separated from another. The single-model run had the same order with a 2.6 lead, so the ORDER has now held across two scoring methods and three models while never once being a measurement
Research record retained on file; no public source link was recorded.
48
PANEL RE-RUN AFTER THE BATTERY FIX: iPhone Duo 85.8 (spread 10, high), Xiaomi 18 Fold 83.3 (spread 10,…
ResearchRecorded 2026-09-11
PANEL RE-RUN AFTER THE BATTERY FIX: iPhone Duo 85.8 (spread 10, high), Xiaomi 18 Fold 83.3 (spread 10, high), Galaxy Z Fold8 81.8 (spread 8, high). The 4:3 order holds for a THIRD time, now across two panel runs and one single-model run, and the Duo's lead over the Xiaomi widens from 0.4 to 2.5 - still inside a spread of 10
Research record retained on file; no public source link was recorded.
49
THE PANEL'S OWN SPREAD IS NOISY BETWEEN RUNS. iPhone 18 Pro Max went from spread 4 and high confidence to…
ResearchRecorded 2026-09-11
THE PANEL'S OWN SPREAD IS NOISY BETWEEN RUNS. iPhone 18 Pro Max went from spread 4 and high confidence to spread 18 and medium across two panel runs, with its record UNCHANGED - only the four Huawei records were edited between them. iPhone 18 Pro moved 8 to 18 the same way. The driver is value: claude 79, grok 73, gemini 91 on the Pro Max. So the spread column measures disagreement on the day, not a stable property of the product, and a low spread is weaker evidence than it looks. The overalls themselves were stable - 13 of 14 moved by less than 4 points
Research record retained on file; no public source link was recorded.
50
PANEL REPRODUCIBILITY MEASURED, and it is the answer to whether the panel is worth its cost. Scoring the…
ResearchRecorded 2026-09-11
PANEL REPRODUCIBILITY MEASURED, and it is the answer to whether the panel is worth its cost. Scoring the same unchanged records twice: a SINGLE model moved five products by a mean of 5.34 points, max 7.1. The three-model panel moved ten smartphones by a mean of 1.52, max 3.1, and six earbuds by a mean of 0.83, max 2.4. The panel reproduces roughly four to six times better than one model, which is what justifies the extra calls
Research record retained on file; no public source link was recorded.
51
BUT THE SPREAD COLUMN DOES NOT REPRODUCE. Across the same two runs the widest-disagreement figure moved by…
ResearchRecorded 2026-09-11
BUT THE SPREAD COLUMN DOES NOT REPRODUCE. Across the same two runs the widest-disagreement figure moved by a mean of 5.0 points on the smartphones (max 14: iPhone 18 Pro Max went 4 to 18) and 3.2 on the earbuds (max 6). So the OVERALL is reproducible to about a point and a half while the disagreement figure beside it is not. Read a spread as evidence that models disagreed on the day, never as a stable property of the product - and never treat a low spread as confirmation
Research record retained on file; no public source link was recorded.
52
PANEL ON COMPLETE EVIDENCE: iPhone Duo 86.5 (spread 7, high), Xiaomi 18 Fold 85.8 (spread 13, high),…
ResearchRecorded 2026-09-11
PANEL ON COMPLETE EVIDENCE: iPhone Duo 86.5 (spread 7, high), Xiaomi 18 Fold 85.8 (spread 13, high), Galaxy Z Fold8 83.0 (spread 10, high). The 4:3 order has now held across FOUR scoring runs - one single-model and three panels - and the Duo's lead over the Xiaomi is 0.7 against a spread of 13
Research record retained on file; no public source link was recorded.
53
iPhone Duo's Malaysian record now carries preorder, not the interim official chosen before that status…
ResearchRecorded 2026-09-11
iPhone Duo's Malaysian record now carries preorder, not the interim official chosen before that status existed. Status preorder, RM9,499, Apple Malaysia named as the authorised channel, in_stock null, with the 16 October pre-order and 23 October on-sale dates in the note. The earlier reasoning - that official was the honest fit because refer had no word for a confirmed-but-not-shipping launch - was true when written and is superseded by the vocabulary change
Research record retained on file; no public source link was recorded.
54
Recency refresh cycle: 1 year(s). Large foldables follow the yearly phone cycle; Samsung launches a Galaxy…
ResearchRecorded 2026-09-27
Recency refresh cycle: 1 year(s). Large foldables follow the yearly phone cycle; Samsung launches a Galaxy Z Fold each July. An unreleased entry scores 100.
Research record retained on file; no public source link was recorded.
55
Recency scores, max(0, round(100 × (1 − age_days / (2 × cycle_days)))) at 2026-09-27: iPhone Duo -26 days…
CalculationRecorded 2026-09-27
Recency scores, max(0, round(100 × (1 − age_days / (2 × cycle_days)))) at 2026-09-27: iPhone Duo -26 days → 100 (refer catalog release date, as the page shows); Xiaomi 18 Fold 20 days → 97 (refer catalog release date, as the page shows); Galaxy Z Fold8 67 days → 91 (refer catalog release date, as the page shows).
Calculated from the recorded inputs. This is not a separately observed market price.
56
Totals with recency, recomputed from the unrounded pre-recency totals (0.9 × total + 0.1 × recency; an…
CalculationRecorded 2026-09-27
Totals with recency, recomputed from the unrounded pre-recency totals (0.9 × total + 0.1 × recency; an entry missing a criterion is renormalised over the weight actually scored), in order: 1 iPhone Duo 86.480 → 87.832 (87.8); 2 Xiaomi 18 Fold 85.780 → 86.902 (86.9); 3 Galaxy Z Fold8 83.040 → 83.836 (83.8). The earlier totals row blended the one-decimal published totals; every displayed score and position is unchanged. Entries whose totals round to the same one-decimal score share a rank. No stock-based tie-break.
Calculated from the recorded inputs. This is not a separately observed market price.
57
Live panel median sub-scores, read from each product's production score record on 27 Sep 2026 (the figures…
ResearchRecorded 2026-09-27
Live panel median sub-scores, read from each product's production score record on 27 Sep 2026 (the figures behind the six-criterion totals): iPhone Duo performance 95, display 92, camera 81, battery 86, software 91, value 67; Xiaomi 18 Fold performance 92, display 93, camera 92, battery 92, software 52, value 76; Galaxy Z Fold8 performance 95, display 91, camera 75, battery 76, software 94, value 62. Entry pros and cons quoted scores from the superseded 10 Sep single-model runs until this row.
Research record retained on file; no public source link was recorded.
58
Square-format foldables in refer's catalog on 27 Sep 2026, panel overall scores on the standing…
ResearchRecorded 2026-09-27
Square-format foldables in refer's catalog on 27 Sep 2026, panel overall scores on the standing six-criterion rubric (no recency): Honor Magic V6 90.5; Oppo Find N6 89.8; Galaxy Z Fold8 Ultra 85.2; Pixel 11 Pro Fold 84.4. The Honor, not the Oppo, is the highest-scoring foldable in the catalog. These supersede the single-model figures in [3] and [41] for the guide's list of excluded phones; those rows remain the record of the earlier runs.
Research record retained on file; no public source link was recorded.