Samsung Galaxy S25 (128GB): problems, parts and running costs
Checked: 2026-10-08
Summary
The Galaxy S25 128GB is a compact flagship with top-tier performance and seven years of updates, but it charges slowly at 25W with no adapter in the box, and its 128GB tier uses slower UFS 3.1 storage than the 256GB and 512GB tiers. Running costs are low: no subscription, with a separate 25W charger and a magnetic case as the practical extras. It is an easy buy at the late-2026 street price around $400 and needs comparison shopping above $500.
Common problems and fixes
- Slow charging, no adapter in the box — charging is capped at 25W and only a 3A USB-C cable ships; PCMag measured 35% in 15 minutes and 64% in 30 minutes, full in 65 minutes, while GSMArena measured 28%, 56% and 1h17m and called it “extremely slow to charge”. Fix: buy a 25W USB-PD/PPS adapter separately. [3][5]
- Slower storage than the bigger tiers — the 128GB model uses UFS 3.1 while 256GB and 512GB use UFS 4.0, and there is no microSD slot; GSMArena advises getting 256GB at minimum for the faster storage. Fix: step up to 256GB ($859.99, a $60 step) if 128GB feels tight. [2][4][5]
- Grainy night video and focus problems — one owner reports grainy night videos and focus and sharpness issues, claiming Samsung’s mid-range A52s 5G does better; GSMArena staff reply that a software update should resolve it. [12]
- Portrait Studio skin-color errors — PCMag found Portrait Studio repeatedly altered his skin color and, in his words, “arguably, my race”. No fix reported. [5]
- 2D face unlock not secure enough — PCMag states face unlock is “not secure enough for sensitive applications like banking”. Fix: use the ultrasonic fingerprint sensor. [5]
- Cluttered software — The Verge’s cons include “Samsung software is as cluttered as usual” and “AI is still a mixed bag”. [6]
Samsung’s US smartphone warranty is 12 months; Samsung Care+ is the paid extension and Samsung runs a self-repair parts channel. [14]
Parts and consumables
No replaceable parts or consumables reported. [14]
Yearly running cost
Not enough data. There is no subscription required for core function, and Galaxy AI features were provided free until the end of 2025, with different terms possible for third-party AI features. [1][5]
When it is a good buy
- At the $799.99 MSRP it competed with the iPhone 16 and Pixel 9, winning on performance and 12GB RAM but giving up base storage and a charger; PCMag saw $759 at Best Buy in February 2025. [5][10]
- At roughly $700-760 it was a straightforward compact-flagship purchase. [5][6]
- At $400-430 (late-2026 pricing: $399.94 on GSMArena’s affiliate table and $429.93 on its spec page) it is a very strong buy for a small, light, fast Android with seven years of updates. [2][4]
- Above $500, compare first: the S25+ (from $999.99, 6.7-inch, 4900 mAh, 45W) offers a larger battery and faster charging, and the newer S26 family (from $24.99/month at Verizon) is the current generation. [2][13]