iPhone Duo vs Galaxy Z Fold8 vs Xiaomi 18 Fold

Apple’s iPhone Duo joins two wide, book-style rivals with a later release date and a broad initial launch. Its $1,999 U.S. starting price sits just above Samsung’s, while Xiaomi offers a larger stated battery—but its China price cannot be compared directly with either U.S. price. 34169

Launch dates, markets and starting prices

Apple says iPhone Duo pre-orders open October 16, 2026, at 5 a.m. Pacific, with availability beginning October 23 in more than 70 countries and regions. The 256GB model starts at $1,999 in the U.S. Samsung announced the Galaxy Z Fold8 on July 22; its U.S. starting price is $1,899. Xiaomi’s 18 Fold reached China in September, starting at CNY 10,999. The reporting reviewed does not confirm a global Xiaomi release. Local prices are not like-for-like currency comparisons. 34716913

Displays, design and chips

All three use a cover screen for closed-phone use and a wider display inside. Duo has a 5.4-inch outer screen and 7.6-inch inner screen, an A20 Pro chip and a titanium frame. The Galaxy Z Fold8 pairs an approximately 5.5-inch cover screen with a 7.6-inch inner display and runs the Snapdragon 8 Elite Gen 5 for Galaxy. Xiaomi lists 5.38-inch outer and 7.58-inch inner displays with its XRing O3 chip. One hands-on report gives Xiaomi’s inner-screen size as 7.68 inches, so published measurements are not entirely consistent. 49511152133

Weight, folded thickness and battery

Samsung is the lightest of the three on the available figures at 201 g and 9.7 mm folded, with a 4,800 mAh battery. Xiaomi weighs 219 g, measures 10.68 mm folded and has a 6,000 mAh battery—the largest stated capacity here. A third-party specification listing puts Duo at 254 g and 11.3 mm folded, but those figures warrant more caution than Apple’s published launch details. A comparably clear Duo battery-capacity figure is not established in the material reviewed. Capacity alone also cannot determine real-world battery life. 15495234

Dust and water resistance

The reported ratings are IP68 for Duo, IP48 for Samsung and IP58/IP59 for Xiaomi. These codes refer to specified dust and water tests, not every hazard a folding phone may encounter. They should not be treated as a complete durability ranking. 49159

October rumors and the mainstream question

Duo’s October release is confirmed; a separate October Apple product announcement is not. Reporting names a touchscreen MacBook Pro, M6 Macs, a new Apple TV 4K and a home hub among rumored possibilities, but none should be treated as an announced October launch. 3457

TrendForce forecasts roughly 5 million Duo shipments in 2026, equal to 24.8% of foldable-phone shipments; a reported Counterpoint forecast puts Apple at up to 6 million and around 25%. These are different forecasts, not sales results. Even if Apple takes a large share of foldables quickly, that would not by itself make foldables mainstream across all smartphones. Prices starting near $2,000 for Apple and Samsung remain a substantial value-for-money hurdle. 26253416