PhoneLifespan

15T vs Poco C71 4G

vs

Winner

Xiaomi 15T

Lifespan decides this one: the 15T is supported until Sep 2030 at $9.76 per month of safe use, while the Poco C71 4G runs out in Apr 2029 ($2.23/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15T 70 · Poco C71 4G 69 — methodology

The lifespan decider

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

Xiaomi 15T $500
Safe to buy$9.76/mo
2025◆ Buy-by Sep 20282030
Xiaomi Poco C71 4G $75
Buy with care$2.23/mo
2025◆ Buy-by Apr 20272029

Category by category

Display
15T 70Poco C71 4G 70

Both displays are effectively the same class.

Performance
15T 78Poco C71 4G 55

The 15T's MediaTek Dimensity 8400-Ultra is simply the faster chip.

Camera
15T 79Poco C71 4G 40

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

Battery
15T 90Poco C71 4G 84

5,500mAh vs 5,200mAh — the 15T lasts longer between charges.

Software longevity
15T 61Poco C71 4G 40

The 15T is supported until Sep 2030 — 18 months longer than the Poco C71 4G.

Value
15T 70Poco C71 4G 69

Pound for pound, these two are equally good deals.

Full spec table
Spec15TPoco C71 4G
Price (street)$500$75
Display6.83-inch AMOLED, 2772x1280, 144Hz6.88-inch IPS LCD, HD+, 120Hz
ChipsetMediaTek Dimensity 8400-UltraUnisoc T7250 (12nm)
RAM12GB4GB/6GB
Storage256GB/512GB64GB/128GB
Battery5,500 mAh5,200 mAh
Charging67W wired15W wired
Rear cameras50MP main, 50MP telephoto 2x, 12MP ultra-wide32MP main
Dimensions163.2 × 78.0 × 7.5 mm171.79 × 77.8 × 8.26 mm
Weight194 g193 g
Water resistanceIP68IP52
Supported untilSep 2030Apr 2029
15T full verdict →Poco C71 4G 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.