Samsung Galaxy S26 Ultra vs iPhone 17 Pro

The Samsung Galaxy S26 Ultra and the Apple iPhone 17 Pro are the two phones people mean when they say "the best". One is the flagship of the Android world, the other the flagship of iOS, and at roughly the same price the choice is less about which is better on a spec sheet and more about which suits how you live. Here is how they compare, drawn from independent expert reviews of each, with current UK prices, so you can weigh the trade-offs fairly.

At a glance

The Galaxy S26 Ultra (around £1,129.00) is the bigger, more versatile phone: a larger screen with a clever privacy mode, a built-in stylus, more cameras with longer zoom, a bigger battery and much faster charging. The iPhone 17 Pro (around £1,099.00) is the more compact, video-focused option, with Apple's fastest chip, class-leading video tools and the tightly integrated iOS experience. The first question is which operating system you want; after that, each has clear hardware strengths.

Check the Galaxy S26 Ultra price on Amazon · Check the iPhone 17 Pro price on Amazon

Operating system and ecosystem

This is the decision that overrides all the others. The S26 Ultra runs Android with Samsung's One UI, which is highly customisable, flexible with default apps and files, and pairs naturally with Windows PCs and Galaxy wearables. The iPhone 17 Pro runs iOS, which is simpler and more consistent, with long software support and seamless links to Macs, iPads, AirPods and the Apple Watch. Neither is "better" — if your other devices are Apple, the iPhone slots in effortlessly; if you value choice and cross-platform freedom, the Galaxy is the more open option. Be honest about which ecosystem you already live in, because switching is the real cost.

Design and build

The two take different approaches to size. The S26 Ultra is the larger phone, with a bigger screen, yet it stays impressively thin at 7.9 mm and weighs 214 g. The iPhone 17 Pro returns to a beautifully finished aluminium unibody and is the more compact device; thanks to its smaller body it is actually the lighter of the two at 206 g — only about 7 g more than its predecessor despite a bigger battery — though at 8.8 mm it is the chunkier in the hand. The Samsung also hides an integrated S Pen stylus in its body, which the iPhone has no equivalent for. If you want the biggest screen and a stylus, the Galaxy appeals; if you prefer a more compact, lighter phone, the iPhone does.

Screen

The Galaxy has the size advantage with a 6.9-inch AMOLED at 120 Hz, and it adds a genuinely novel hardware privacy filter that stops people beside you reading the screen. The iPhone 17 Pro's 6.3-inch OLED is smaller but superb; Apple quotes up to 3000 nits and reviewers measured a very bright 2507 cd/m² in testing. Both are among the best panels on any phone. Choose the Galaxy for sheer screen real estate and the privacy trick; the iPhone if you would rather a more manageable display.

Performance

Both are as fast as phones get, and both now use a vapour chamber to hold performance under load — a first for Apple this generation. The iPhone 17 Pro's A19 Pro chip is Apple's most powerful yet, in its full six-GPU-core form, and it is formidable in sustained work. The S26 Ultra counters with the Snapdragon 8 Elite Gen 5 "for Galaxy" and an Adreno 840 graphics chip, and it is blisteringly quick too. In practice you will not find either wanting; the iPhone tends to lead in raw single-task speed, the Galaxy offers more memory and Android's multitasking flexibility.

Cameras

The Galaxy is the more versatile camera system on paper. It carries four rear cameras — a 200-megapixel main with a bright f/1.4 aperture, a 50-megapixel ultra-wide, a 50-megapixel 5x telephoto and a 10-megapixel 3x telephoto — giving it the longer optical reach and the highest-resolution sensor. The iPhone 17 Pro runs a triple 48-megapixel system, with every sensor now at 48 megapixels: a 24 mm main camera, a 13 mm ultra-wide and a telephoto at a 100 mm (4x) equivalent. Where the iPhone pulls ahead is video: it films 4K60 in Dolby Vision and can now capture ProRes RAW on every lens, which makes it the tool of choice for serious video. For stills versatility and zoom the Galaxy leads; for video the iPhone is the stronger pick.

Battery and charging

The Galaxy has the clearer edge here. It packs a 5000 mAh battery and charges at 60 W, filling up in around 48 min. The iPhone 17 Pro's European model carries a smaller battery — a nominal 3998 mAh — with slower wired charging and wireless MagSafe charging up to 25 W, so it needs more frequent or longer top-ups. Both will see out a normal day, but if endurance and quick refuelling matter, the Galaxy is the more convenient companion.

Price and verdict

At the time of writing the Galaxy S26 Ultra is around £1,129.00 and the iPhone 17 Pro around £1,099.00 — close enough that price should not decide it.

Choose the Galaxy S26 Ultra if you want the bigger screen, the S Pen, the more flexible cameras with longer zoom, the larger battery and faster charging, and the openness of Android. It is the more do-everything phone.

Choose the iPhone 17 Pro if you are invested in the Apple ecosystem, want the best video capture of any phone, prefer a more compact flagship, and value iOS's simplicity and long support. Both are the finest phones their platforms offer; the honest answer is to pick your operating system first, then enjoy an outstanding phone either way.