Samsung Galaxy S25 Ultra specs: all the key specs for the top S25 model

On paper the Samsung Galaxy S25 Ultra is one of the most high-end phones you can buy, rivaling the likes of the iPhone 16 Pro Max and the OnePlus 13. In fact, in many ways its specs even have those phones beat.

Not only that, but it’s also a significant upgrade on the Samsung Galaxy S24 Ultra, with improvements to the chipset, camera system, vapor chamber, and more, along with a bigger screen.

So this is an exciting handset, and to see exactly why, read on for a full overview of the S25 Ultra’s key specs. Or, for more of an idea of how it performs in practice, check out our hands-on Samsung Galaxy S25 Ultra review. We’ve also got a hands-on Samsung Galaxy S25 review and a hands-on Samsung Galaxy S25 Plus review.

Samsung Galaxy 25 Ultra specs

Arguably the biggest spec upgrade in the Samsung Galaxy S25 Ultra is one you’ll also find in the other Samsung Galaxy S25 models – namely the chipset, which this year is a Snapdragon 8 Elite.

This offers vastly improved CPU, GPU, and AI performance compared to the Samsung Galaxy S24 Ultra’s Snapdragon 8 Gen 3 chipset, with Samsung claiming it’s capable of 37% faster processing, 30% better graphics performance, and 40% faster AI performance.

However, that’s disappointingly not been joined by an increase in RAM – or at least not in most regions. There is a 16GB version of the Samsung Galaxy S25 Ultra, but it’s only available in South Korea, Taiwan, and China. Everywhere else is stuck with 12GB, just like you’d get with the Galaxy S24 Ultra.

Storage also hasn’t changed, with the Samsung Galaxy S25 Ultra being available in a choice of 256GB, 512GB, and 1TB capacities.

One other upgrade you do get is to the screen, as the Samsung Galaxy S25 Ultra has a 6.9-inch 1440 x 3120 AMOLED display with a 120Hz refresh rate (coming in at around 498 pixels per inch) and a peak brightness of 2,600 nits. Of those, it’s simply the size that has changed, with the Galaxy S24 Ultra being slightly smaller at 6.8 inches.

Another area of improvement is the cameras, as the Samsung Galaxy S25 Ultra has a 200MP f/1.7 main (wide) camera, a 50MP f/3.4 periscope camera (with 5x optical zoom), a 10MP f/2.4 telephoto camera (with 3x optical zoom), and a 50MP f/1.9 ultra-wide camera (with a 120-degree field of view).

It’s the last of those that’s an upgrade, as the Samsung Galaxy S24 Ultra has just a 12MP ultra-wide camera. Like last year, there’s also a 12MP f/2.2 front-facing camera here.

The Samsung Galaxy S25 Ultra should also be a little tougher than its predecessor, thanks to the use of Corning Gorilla Armor 2 rather than Gorilla Armor.

Finally as far as specs that have improved are concerned, the Samsung Galaxy S25 Ultra has a 40% larger vapor chamber than its predecessor, which should help keep it cool, in turn aiding sustained performance and battery efficiency.

And speaking of the battery, there’s no real change here, with it once again being a 5,000mAh one with 45W charging. That said, the S25 Ultra is Qi2-ready unlike its predecessor, which means it supports magnetic wireless charging, but only with the help of a special case.

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