Samsung Galaxy S25 (128GB)

By Samsung · Smartphones · Phones & Computers

  • 6.2-inch FHD+ Dynamic AMOLED 2X, 120 Hz
  • Snapdragon 8 Elite for Galaxy
  • 4000 mAh battery, 25W wired + 15W wireless charging
  • 50 MP main + 12 MP ultrawide + 10 MP telephoto (3x optical)

Lowest price seen
~$799.99 (approx.)
from $799.99 at Amazon

Prices are snapshots. Check the current price with the store.

Summary

A compact flagship Android with a 6.2-inch 120Hz display, Snapdragon 8 Elite performance and seven years of updates, built for buyers who want a small, light phone rather than a big-screen one. Check the storage tier before you buy: the 128GB model uses slower UFS 3.1 storage than the 256GB and 512GB versions, and there is no microSD slot.

Strengths

  • Snapdragon 8 Elite delivers flagship speed; PCMag measured 3,050 in Geekbench 6 single-core, close to the iPhone 16.
  • The 6.2-inch 120Hz OLED is bright and smooth, measured at 1395 nits in automatic mode.
  • At 162 g it is light and comfortable; reviewers call it the last reasonably sized Android flagship.
  • Seven years of OS and security updates match Google’s commitment.
  • The 4000 mAh battery lasted 14 hours 15 minutes in PCMag’s streaming test.
  • Stereo speakers, IP68 and wireless charging round out a complete compact package.

Weaknesses

  • The 128GB tier uses UFS 3.1 storage; the 256GB and 512GB models get faster UFS 4.0.
  • Charging is capped at 25W and no adapter is in the box.
  • The ultrawide camera has no autofocus, and the camera hardware is unchanged from the S24.
  • Reviewers call camera quality only average for the price, with soft detail and over-sharpening.
  • No microSD slot, no UWB and no anti-reflective glass; those are reserved for the bigger models.
  • Some owners report grainy night video and focus problems.

Verified specifications

ModelGalaxy S25, 128GB storage and 12GB RAM; US SKU SM-S931U (unlocked SM-S931UZAA).
Display6.2-inch Dynamic LTPO AMOLED 2X, 1080 × 2340, 120Hz adaptive, HDR10+, Gorilla Glass Victus 2.
Measured brightness438 nits manual, 747 nits with extra-brightness boost, 1395 nits automatic maximum, 1 nit minimum.
ChipsetSnapdragon 8 Elite (3 nm), 2× 4.47 GHz and 6× 3.53 GHz Oryon cores, Adreno 830.
Storage128GB uses UFS 3.1; the 256GB and 512GB tiers use UFS 4.0; no microSD slot.
Rear cameras50MP f/1.8 wide with OIS, 10MP f/2.4 telephoto with 3× optical zoom, 12MP f/2.2 ultrawide.
Front camera12MP f/2.2 with autofocus.
Video8K at 24/30fps, 4K at 30/60fps, 1080p up to 240fps, 10-bit HDR.
Battery4000 mAh, non-removable.
Charging25W wired, 15W wireless, 4.5W reverse wireless.
SoftwareAndroid 15 with One UI 7; 7 OS upgrades and 7 years of security updates.
Connectivity5G, Wi-Fi 7, Bluetooth 5.4, NFC, USB-C 3.2.
DurabilityIP68, 1.5 m for 30 minutes; Armor Aluminum 2 frame.
Dimensions5.78 × 2.78 × 0.28 in (146.9 × 70.5 × 7.2 mm); 5.71 oz (162 g).
Full research notes and sources

Performance and software

GSMArena calls the S25 an S24 with a new chip: the update list has one entry, the Snapdragon 8 Elite, and the camera hardware is unchanged. PCMag measured 3,050 in Geekbench 6 single-core, 19,060 in PCMark Work 3.0 and 118 fps in GFXBench Aztec Ruins against the S24’s 85 fps, and a 15-minute Genshin Impact session ran without a dropped frame. UL’s benchmark database lists a PCMark Work 3.0 score of 20,222. Samsung promises 7 major OS upgrades and 7 years of security updates, matching Google, which PCMag calls the best you can get on Android.

Battery, charging and storage

The 4000 mAh battery is sealed and non-removable. PCMag’s streaming test ran 14 hours 15 minutes; GSMArena’s active-use score was 13:09 and its endurance table placed the S25 below the iPhone 16 and Xiaomi 15. Charging is capped at 25W and no adapter ships in the box, only a 3A USB-C cable. The two labs disagree on speed: PCMag saw 35% in 15 minutes and 64% in 30 minutes, full in 65 minutes; GSMArena measured 28% and 56%, and 1h17m to full. Samsung’s Battery Protection can cap charging at 80, 85, 90 or 95%.

The 128GB tier uses UFS 3.1, while the 256GB and 512GB tiers use UFS 4.0, a difference most listings do not show. GSMArena’s verdict advises buying the 256GB version at minimum for the faster storage. There is no microSD slot at any tier, and the 256GB upgrade costs $859.99, a $60 step.

Cameras and owner reports

The rear array is a 50MP wide with OIS, a 10MP telephoto with 3× optical zoom and a 12MP ultrawide; the ultrawide has no autofocus, and the hardware is the same as the S24. PCMag found colors slightly oversaturated and shots over-brightened, with 8K30 video dark and shakier than 4K60. GSMArena’s reader comments include owners upgrading from an S20 FE and an S23 who call the camera unchanged, the speaker worse and the raised module awkward to hold; others report grainy night video and focus problems. GSMArena’s own reviewer flagged a misaligned ultrawide lens on the review unit as a possible one-off.

Is it worth it?

Samsung lists the 128GB model at $799.99, level with the iPhone 16 and Pixel 9 at launch. By late 2026 the S25 had been superseded by the S26 generation, and discounted listings showed about $399.94 for 128GB and $429.93 on GSMArena’s spec page. At that level it is an easy recommendation for anyone who wants a small, light, fast Android with long update support; above $500 the S25+ and last-generation flagships offer larger batteries, faster charging and more base storage. The S25+ starts at $999.99 and the S25 Ultra at $1,299.99.

Which model this is

This page covers the base Galaxy S25 in the 128GB tier, US model SM-S931U (unlocked SM-S931UZAA). Samsung uses other region codes including SM-S931B, SM-S931U1, SM-S931W, SM-S931N and SM-S931E. Don’t confuse it with the S25+ (6.7-inch), the S25 Ultra (6.9-inch, S Pen), the S25 Edge or the later S25 FE. A 512GB tier exists for the S25, though AT&T’s US support page lists only 128GB and 256GB. The Amazon listing for this configuration is ASIN B0DP3FP5P3.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Specifications and stores:

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