PhoneLifespan

Galaxy M15 5G vs Poco X7 5G

vs

It depends

Too close to call outright

These two are within 4 points overall, so it depends on you: keep phones for years → Galaxy M15 5G (supported until Apr 2029); want maximum speed → Poco X7 5G (MediaTek Dimensity 7300 Ultra (4nm)).

Value Score: Galaxy M15 5G 71 · Poco X7 5G 75 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$4.46/mo
2024◆ Buy-by Apr 20272029
Xiaomi Poco X7 5G $230
Buy with care$7.47/mo
2025◆ Buy-by Jan 20272029

Category by category

Display
Galaxy M15 5G 50Poco X7 5G 80

The Poco X7 5G's screen is the better one — 6.67-inch amoled, 1.5k (446 ppi), 120hz, 3000 nits peak, gorilla glass victus 2.

Performance
Galaxy M15 5G 38Poco X7 5G 58

The Poco X7 5G's MediaTek Dimensity 7300 Ultra (4nm) is simply the faster chip.

Camera
Galaxy M15 5G 55Poco X7 5G 67

The Poco X7 5G has the stronger camera system (2 real rear lenses vs 1).

Battery
Galaxy M15 5G 100Poco X7 5G 90

6,000mAh vs 5,500mAh — the Galaxy M15 5G lasts longer between charges.

Software longevity
Galaxy M15 5G 40Poco X7 5G 37

The Galaxy M15 5G is supported until Apr 2029 — 3 months longer than the Poco X7 5G.

Value
Galaxy M15 5G 71Poco X7 5G 75

Overall value goes to the Poco X7 5G at $7.47 per month of safe use.

Full spec table
SpecGalaxy M15 5GPoco X7 5G
Price (street)$150$230
Display6.5-inch Super AMOLED, 1080 x 2340 (FHD+), 90Hz6.67-inch AMOLED, 1.5K (446 ppi), 120Hz, 3000 nits peak, Gorilla Glass Victus 2
ChipsetMediaTek Dimensity 6100+MediaTek Dimensity 7300 Ultra (4nm)
RAM4GB/6GB/8GB8GB/12GB
Storage128GB/256GB128GB/256GB/512GB
Battery6,000 mAh5,500 mAh
Charging25W wired45W wired
Rear cameras50MP main, 5MP ultra-wide, 2MP macro50MP main, 8MP ultra-wide, 2MP macro
Dimensions160.1 × 76.8 × 9.3 mm162.3 × 74.4 × 8.4 mm
Weight217 g190 g
Water resistanceNoneIP68 (also IP69)
Supported untilApr 2029Jan 2029

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