PhoneLifespan

15 vs Poco M7 Plus 5G

vs

Winner

Xiaomi Poco M7 Plus 5G

Lifespan decides this one: the Poco M7 Plus 5G is supported until Aug 2029 at $4.34 per month of safe use, while the 15 runs out in Mar 2030 ($16.87/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15 67 · Poco M7 Plus 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.

Xiaomi 15 $750
Safe to buy$16.87/mo
2025◆ Buy-by Mar 20282030
Xiaomi Poco M7 Plus 5G $165
Safe to buy$4.34/mo
2025◆ Buy-by Aug 20272029

Category by category

Display
15 90Poco M7 Plus 5G 70

The 15's screen is the better one — 6.36-inch crystalres amoled, 2670×1200 (460 ppi), 1–120hz ltpo, up to 3200 nits peak, dolby vision/hdr10+.

Performance
15 98Poco M7 Plus 5G 46

The 15's Snapdragon 8 Elite is simply the faster chip.

Camera
15 79Poco M7 Plus 5G 55

The 15 has the stronger camera system (3 real rear lenses vs 1).

Battery
15 85Poco M7 Plus 5G 100

7,000mAh vs 5,240mAh — the Poco M7 Plus 5G lasts longer between charges.

Software longevity
15 53Poco M7 Plus 5G 45

The 15 is supported until Mar 2030 — 6 months longer than the Poco M7 Plus 5G.

Value
15 67Poco M7 Plus 5G 75

Overall value goes to the Poco M7 Plus 5G at $4.34 per month of safe use.

Full spec table
Spec15Poco M7 Plus 5G
Price (street)$750$165
Display6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+6.9-inch IPS LCD, FHD+, 144Hz, 850 nits peak
ChipsetSnapdragon 8 EliteQualcomm Snapdragon 6s Gen 3 (6nm)
RAM12GB4GB/6GB/8GB
Storage256GB/512GB128GB
Battery5,240 mAh7,000 mAh
Charging90W wired, 50W wireless33W wired, 18W reverse wired
Rear cameras50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)50MP main
Dimensions152.3 × 71.2 × 8.08 mm168.5 × 80.5 × 8.4 mm
Weight191 g217 g
Water resistanceIP68IP64
Supported untilMar 2030Aug 2029
15 full verdict →Poco M7 Plus 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.