Samsung Galaxy S25 Series Review

Verdict

The Samsung Galaxy S25 series is a textbook case of incremental but purposeful improvement. The base S25 is the most compelling compact Android flagship on the market right now — small, light, and genuinely fast thanks to the Snapdragon 8 Elite chipset. The S25 Ultra continues to be the gold standard for Android power users who want a maxed-out camera system and S Pen productivity in one device. And the S25+ sits comfortably in the middle, arguably offering the best value of the three. None of these phones will blow your mind with a radical redesign or a surprise new feature. But if you want a reliable, polished, long-supported Android flagship that won’t embarrass you in two years, this series has that covered.

Specs at a Glance

Pros & Cons

Design: Familiar, But Refined

There’s no dramatic redesign here — Samsung didn’t pretend otherwise. What you get across the S25, S25+, and S25 Ultra is a modest tightening of the existing formula: each model is about 0.4mm thinner than its S24 counterpart, the bezels are marginally slimmer, and the corners are slightly more rounded on the Ultra specifically, giving it a softer feel in hand than the sharper-edged S24 Ultra.

The base S25 is the one that actually turns heads — not for looking different, but for how small it is. At 146.9 x 70.5 x 7.2mm and 162 grams, it’s genuinely pocketable in a way that most 2025 flagships aren’t. If you’ve been mourning the death of the compact smartphone category, this is the best argument that it still exists.

The Ultra, meanwhile, ships with a titanium frame — a material choice that pays dividends in rigidity and premium feel without adding unnecessary weight. Gorilla Armor 2 on the front glass offers notably better scratch resistance than what’s on the standard models, which is worth knowing if you’re the type to toss your phone in a bag with keys.

Display: Hard to Fault at Any Model

All three phones use Dynamic LTPO AMOLED 2X panels with a 1-120Hz adaptive refresh rate and HDR10+ support, hitting up to 2,600 nits peak brightness. In practice that means they look excellent indoors and hold up well in direct sunlight — better than most competing flagships in the Android space.

The S25+ and Ultra also gain ProScaler, Samsung’s AI-based upscaling for video content, which does produce a noticeable improvement in streaming quality at anything less than native resolution. It’s not a transformative feature, but it’s genuinely useful if you watch a lot of video on your phone. The base S25 doesn’t get it, which feels like an arbitrary cut given the price.

Performance: The Real Reason to Upgrade

If there’s one thing Samsung got unambiguously right this year, it’s the chipset decision. The Snapdragon 8 Elite for Galaxy — a custom-tuned variant of Qualcomm’s latest 3nm chip — powers all three models globally. That’s a departure from previous years when some regions got Exynos chips, and it’s a welcome one.

The performance jump is real. Benchmarks show roughly 35-40% CPU improvement and around 40% GPU uplift over the Snapdragon 8 Gen 3 in last year’s S24 series. Day-to-day, that translates to apps launching faster, gaming running smoother, and the phone staying cooler under sustained load thanks to a redesigned vapor chamber cooling system — the Ultra’s version is about 40% larger than the S24 Ultra’s, and it shows during extended gaming sessions.

The new chip also brings Wi-Fi 7 and Bluetooth 5.4 support across the lineup, which is genuinely future-proofing worth paying for even if you can’t take full advantage of Wi-Fi 7 today.

Camera: Ultra Pulls Ahead, Base Models Coast

This is where the story splits. The S25 Ultra is a camera powerhouse — 200MP main sensor, 50MP ultrawide, a quad telephoto setup covering 3x, 5x, and 10x optical zoom, and a 12MP front camera. The ProVisual Engine has improved processing, especially in low light and at high zoom levels. If you shoot a lot of photos or need serious telephoto reach, this is still the best single-device camera system in the Android space.

The standard S25 and S25+, though, are running on camera hardware that hasn’t changed in three generations: 50MP main, 10MP 3x telephoto, 12MP ultrawide. The images are good — Samsung’s processing is polished — but in a world where Google’s Pixel 9 Pro and Xiaomi 15 are making real camera hardware investments at similar price points, coasting on the same sensors three years running is starting to feel like a choice rather than an oversight.

Video is a strength across the board, with 8K recording on the Ultra and strong stabilization on all models. Galaxy AI features like Audio Eraser (removes background noise from videos) and Instant Slow-mo, work well in practice, though they’re not unique to Samsung anymore.

Battery Life: Adequate, But Not Class-Leading

Samsung rates the S25 at 29 hours of video playback, the S25+ at 30 hours, and the Ultra at 31 hours. In real-world mixed use — calls, social media, some camera, occasional streaming — expect a full day from all three with moderate use. Heavy users on the base S25 might find themselves reaching for a charger by 9 or 10pm.

The charging situation is the most legitimate complaint. The S25 tops out at 25W wired — which is slow by 2025 flagship standards, full stop. The S25+ and Ultra do better at 45W, but even that trails the 67W and 120W speeds you’ll find in competing flagships from Chinese manufacturers. All three support 15W wireless charging and Samsung DeX for desktop mode, which are welcome consistency across the lineup.

Software: One UI 7 Is the Best Samsung Has Shipped

One UI 7 is a genuine improvement. The visual design has been cleaned up considerably — less visual clutter, better use of space, an improved notification panel — and the overall feel is closer to stock Android than Samsung has managed in years. It ships with Android 15 and comes with Samsung’s promise of seven major OS upgrades and seven years of security patches, which matches what Google offers on Pixel and beats virtually every other Android OEM.

Galaxy AI integration is deep and mostly useful. Circle to Search, Live Translate, Note Assist, and the new Now Brief contextual assistant all work well. The caveat: Samsung has confirmed these AI features are free through the end of 2025. What happens after that is genuinely unclear, and it’s a reasonable thing to factor in before you build workflows around them.

Final Verdict: Which One Should You Buy?

If you want the best compact Android phone on the market right now — the S25 is it, almost by default. The competition in the small flagship category has thinned out considerably, and nothing else at this size runs this hardware. Just know you’re getting last generation’s camera sensors and 2021-era charging speeds wrapped in a 2025 chip.

The S25+ is arguably the sweet spot of the lineup. You get faster charging, a larger and better-specced display with ProScaler, a bigger battery, and UWB support — all for $200 more than the base. For most people upgrading from a two- or three-year-old Samsung, this is the model that makes the most sense.

The S25 Ultra is for people who’ve already decided they want the best Android experience money can buy and don’t want to compromise. The camera system, the S Pen (Bluetooth limitations aside), the 1TB storage option, and the titanium build make it the most complete package. Just be prepared to feel the weight of that $1,299 starting price.

None of these phones are leaps forward. But in a market that’s maturing rapidly, ‘reliably excellent with seven years of updates’ isn’t a bad place to land.

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