PhoneLifespan

Galaxy S25 vs 15T

vs

Winner

Samsung Galaxy S25

The Galaxy S25 wins this one, taking display and performance decisively. Against the 15T it's also the sounder buy at $8.83 per month of safe use.

Value Score: Galaxy S25 75 · 15T 70 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Samsung Galaxy S25 $599
Safe to buy$8.83/mo
2025◆ Buy-by Feb 20302032
Xiaomi 15T $500
Safe to buy$9.73/mo
2025◆ Buy-by Sep 20282030

Category by category

Display
Galaxy S25 9015T 70

The Galaxy S25's screen is the better one — 6.2-inch dynamic ltpo amoled 2x, fhd+, 1–120hz, up to 2600 nits.

Performance
Galaxy S25 9815T 78

The Galaxy S25's Snapdragon 8 Elite for Galaxy is simply the faster chip.

Camera
Galaxy S25 7915T 79

Camera systems are comparable on paper — pick by sample photos.

Battery
Galaxy S25 6015T 90

5,500mAh vs 4,000mAh — the 15T lasts longer between charges.

Software longevity
Galaxy S25 8115T 61

The Galaxy S25 is supported until Feb 2032 — 16 months longer than the 15T.

Value
Galaxy S25 7515T 70

Overall value goes to the Galaxy S25 at $8.83 per month of safe use.

Full spec table
SpecGalaxy S2515T
Price (street)$599$500
Display6.2-inch Dynamic LTPO AMOLED 2X, FHD+, 1–120Hz, up to 2600 nits6.83-inch AMOLED, 2772x1280, 144Hz
ChipsetSnapdragon 8 Elite for GalaxyMediaTek Dimensity 8400-Ultra
RAM12GB12GB
Storage128GB/256GB/512GB256GB/512GB
Battery4,000 mAh5,500 mAh
Charging25W wired, 15W wireless (Qi2 Ready), 4.5W reverse wireless67W wired
Rear cameras50MP main, 12MP ultra-wide, 10MP telephoto 3x50MP main, 50MP telephoto 2x, 12MP ultra-wide
Dimensions146.9 × 70.5 × 7.2 mm163.2 × 78.0 × 7.5 mm
Weight162 g194 g
Water resistanceIP68IP68
Supported untilFeb 2032Sep 2030
Galaxy S25 full verdict →15T full verdict →Longevity master board →

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.