PhoneLifespan

Galaxy M15 5G vs T4 5G

vs

Winner

Samsung Galaxy M15 5G

Lifespan decides this one: the Galaxy M15 5G is supported until Apr 2029 at $4.47 per month of safe use, while the T4 5G runs out in Apr 2028 ($11.62/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy M15 5G 71 · T4 5G 72 — 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 M15 5G $150
Buy with care$4.47/mo
2024◆ Buy-by Apr 20272029
Vivo T4 5G $260
Buy with care$11.62/mo
2025◆ Buy-by Apr 20262028

Category by category

Display
Galaxy M15 5G 50T4 5G 80

The T4 5G's screen is the better one — 6.77-inch amoled, fhd+, 120hz, 5000 nits peak.

Performance
Galaxy M15 5G 38T4 5G 64

The T4 5G's Qualcomm Snapdragon 7s Gen 3 is simply the faster chip.

Camera
Galaxy M15 5G 55T4 5G 55

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

Battery
Galaxy M15 5G 100T4 5G 100

Battery capacities are close enough not to decide this.

Software longevity
Galaxy M15 5G 40T4 5G 27

The Galaxy M15 5G is supported until Apr 2029 — 11 months longer than the T4 5G.

Value
Galaxy M15 5G 71T4 5G 72

Pound for pound, these two are equally good deals.

Full spec table
SpecGalaxy M15 5GT4 5G
Price (street)$150$260
Display6.5-inch Super AMOLED, 1080 x 2340 (FHD+), 90Hz6.77-inch AMOLED, FHD+, 120Hz, 5000 nits peak
ChipsetMediaTek Dimensity 6100+Qualcomm Snapdragon 7s Gen 3
RAM4GB/6GB/8GB8GB/12GB
Storage128GB/256GB128GB/256GB
Battery6,000 mAh7,300 mAh
Charging25W wired90W wired
Rear cameras50MP main, 5MP ultra-wide, 2MP macro50MP main, 2MP depth
Dimensions160.1 × 76.8 × 9.3 mm163.4 × 76.4 × 7.9 mm
Weight217 g199 g
Water resistanceNoneIP65
Supported untilApr 2029Apr 2028
Galaxy M15 5G full verdict →T4 5G 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.