Galaxy S26 vs S25: What's the Difference?

Explore the key updates for the Samsung S26 vs S25.

The Samsung Galaxy S26 has landed, bringing with it lots of exciting upgrades and a supercharged suite of Galaxy AI features. But with the Samsung Galaxy S25 still a powerhouse, the big question is: is it worth upgrading?

Whether you're a seasoned Galaxy user weighing up your next move, new to Android phones, or hunting for the best deal. This snapshot guide breaks down the key differences between the Galaxy S26 and Galaxy S25.

Meaningful Gemini AI updates

Samsung’s Galaxy AI covers a range of productivity features including Live Translate for real-time calls, Generative Photo Edit, and Note Assist for creating text summaries. You can use Audio Eraser to reduce background noise, or Chat Assist to rephrase your writing, check spelling or change tone from casual to professional.

So, what’s new? Google’s Gemini AI is a key part of the Samsung AI suite, and this year it’s bringing a host of updates to the Samsung S26 range.

Gemini AI Update for Galaxy S26	Why it matters
Enhanced Circle to Search	Multi-object image recognition means you can search specific pieces from an outfit you saw online, or look up design inspiration from a whole gallery wall.
Virtually try on outfits	Upload a photo and virtually try on similar styles from top brands.
Improved Scam Detection	Google’s Scam Detection feature is now available directly in the Samsung Phone app on Galaxy S26 devices. Get instant audio and haptic alerts if a potential scam is detected on your call.

Better performance and battery

Samsung Galaxy S26 is powered by the advanced Exynos 2600 chip for a noticeable speed and efficiency boost. For everyday tasks like scrolling, messaging and browsing, both phones feel incredibly responsive. However, when you push them with demanding apps and high-end mobile games, the Galaxy S26 pulls ahead.

Battery capacity has also seen an increase in the newer model. Combined with the more efficient processor, Galaxy S26 delivers a full day of power even after lengthy streaming and workloads. The S25 also boasts an all-day battery, but you might notice lower efficiency when it comes to heavy use.

Both models are built with 5G so you can enjoy O2’s superfast 5G network wherever you go.

Feature	Samsung S26	Samsung S25	Why it matters
Processor	Exynos 2600 for Galaxy	Snapdragon 8 Elite for Galaxy	Upgraded chipset improves AI processing, graphics and efficiency and delivers better power management.
Battery	4,300mAh	4,000mAh	Expanded battery capacity by 300mAh for improved all-day performance.

Which Samsung Galaxy phone is right for me?

Samsung Galaxy S25 holds its value as a top-performing smartphone. It’s powerful, has a brilliant camera, and offers the core Galaxy AI features that keep you up to date with the latest tech. For deal hunters, teens, or anyone who wants a flagship experience without the top-tier pricing, the S25 is a strong choice. You can find some great deals, especially if you opt for a refurbished Samsung S25 from our Like New range, which gives you all of the same O2 perks as buying a brand new device.

On the other hand, the Galaxy S26 is for those who want to push their mobile experience a bit further. With the upgraded chip, battery and Gemini AI features as stand-out updates in 2026, you’ll be getting the most out of Samsung’s flagship range.

You can use the comparison tool on our Samsung phones page for a full view of tech specs. Add up to 4 devices

Trade in your phone and save

Don't forget, your old phone could help you save on your new one. Trade in your old device for cash with O2 Recycle for a simple and sustainable way to make your upgrade even more affordable.

You can explore our best Samsung Galaxy S26 deals or check out the Samsung Galaxy S25 right here at O2.