Apple's first foldable iPhone changes the shape of this autumn's phone conversation, but it arrives in a category that has already split into several distinct ideas. Samsung now offers two book-style flagships as well as a compact flip, Motorola stretches from a fashion-led clamshell to a full book fold, and Google, HONOR and Samsung are all refining what a large inner display should feel like. This guide maps the ten designs worth knowing now, with UK availability checked at source.
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The quick take
The moment
iPhone Duo preorders opened in the UK on 16 October, making this the right week to understand the wider foldable market rather than view Apple's launch in isolation.
The key decision
Choose the format first: book-style foldables prioritise a tablet-like inner screen, while clamshells prioritise pocketability and a more expressive closed design.
The design outliers
HONOR's circular camera ring, Motorola's fabric-finished razr 70 ultra and Google's horizontal camera bars make this one of the most visually varied phone categories.
Recommendations
How to choose
Begin with the fold itself. A book-style device is the better fit if you expect to read, multitask, edit photos or watch video on the inner screen; a clamshell earns its place by becoming smaller in a pocket and giving the cover display a useful role. Next compare the closed-device width and weight, because that is how the phone will feel most of the day. Camera design, water resistance, repair support and the manufacturer's software commitment matter more than a novelty hinge demo. Finally, handle one in person if possible: hinge tension, crease visibility and outer-screen proportions are tactile details that specifications do not fully explain.
The useful thing about the iPhone Duo launch is not that it settles the foldable question; it makes the alternatives easier to see. The category now includes compact flips, slim book folds, camera-led flagships and design objects that happen to be phones. Pick the shape that changes what you can do, not simply the newest badge on the hinge.
The shopping list
10 things, well chosen.

Apple iPhone Duo
Apple's first foldable is the new reference point: a book-style iPhone with an outer display for everyday use and a wider inner canvas when opened. UK preorders are live ahead of 23 October availability.
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Samsung Galaxy Z Fold8 Ultra
Samsung's most ambitious book-style foldable uses a distinct triple-camera design and a large inner display. It is the premium choice for buyers who want the Galaxy foldable idea pushed furthest.
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Samsung Galaxy Z Fold8
The regular Fold8 keeps Samsung's mature book-style format while sitting below the Ultra. Its comparatively restrained camera hardware and familiar proportions make it the more conventional Galaxy fold.
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Samsung Galaxy Z Flip8
Samsung's compact clamshell folds a full-size smartphone into a square-ish pocketable form, with a cover display for quick interactions and an inner screen for normal phone use.
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HONOR Magic V6
HONOR's latest book fold stands apart with a circular camera ring and unusually decorative red-and-gold finish, bringing a luxury-object sensibility to the large-screen format.
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Motorola razr fold
Motorola expands beyond its familiar flips with a full book-style foldable. The dark fabric-like exterior gives it a softer, more tactile identity than most glass-and-metal rivals.
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Motorola razr 70 ultra
The higher-spec razr clamshell pairs a large cover display with fashion-led finishes. This warm brown fabric version makes the closed phone feel deliberately different from a standard slab.
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Motorola razr 70
Motorola's regular razr 70 keeps the compact flip format and useful outer screen at a more approachable position in the range, with a calm grey fabric finish.
View product on AmazonGoogle Pixel 10 Pro Fold
Google's previous-generation book fold remains a current UK option. Its familiar horizontal camera bar and clean Pixel software make it a useful value comparison against the newest launches.
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Google's current foldable refines the book-style Pixel with a redesigned hinge, brighter displays and a more compact camera bar. It is available in the UK in Olive and Obsidian.
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