PhoneLifespan

15 Ultra vs Poco C71 4G

vs

Winner

Xiaomi 15 Ultra

Lifespan decides this one: the 15 Ultra is supported until Mar 2030 at $30.36 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: 15 Ultra 65 · 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 15 Ultra $1350
Safe to buy$30.36/mo
2025◆ Buy-by Mar 20282030
Xiaomi Poco C71 4G $75
Buy with care$2.23/mo
2025◆ Buy-by Apr 20272029

Category by category

Display
15 Ultra 100Poco C71 4G 70

The 15 Ultra's screen is the better one — 6.73-inch 2k (1440×3200) ltpo amoled, 1–120hz, up to 3200 nits peak.

Performance
15 Ultra 98Poco C71 4G 55

The 15 Ultra's Qualcomm Snapdragon 8 Elite (3nm) is simply the faster chip.

Camera
15 Ultra 96Poco C71 4G 40

The 15 Ultra has the stronger camera system (4 real rear lenses vs 1).

Battery
15 Ultra 88Poco C71 4G 84

5,410mAh vs 5,200mAh — the 15 Ultra lasts longer between charges.

Software longevity
15 Ultra 53Poco C71 4G 40

The 15 Ultra is supported until Mar 2030 — 11 months longer than the Poco C71 4G.

Value
15 Ultra 65Poco C71 4G 69

Overall value goes to the Poco C71 4G at $2.23 per month of safe use.

Full spec table
Spec15 UltraPoco C71 4G
Price (street)$1350$75
Display6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak6.88-inch IPS LCD, HD+, 120Hz
ChipsetQualcomm Snapdragon 8 Elite (3nm)Unisoc T7250 (12nm)
RAM16GB4GB/6GB
Storage512GB/1TB64GB/128GB
Battery5,410 mAh5,200 mAh
Charging90W wired, 80W wireless15W wired
Rear cameras50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto32MP main
Dimensions161.3 × 75.3 × 9.35 mm171.79 × 77.8 × 8.26 mm
Weight226 g193 g
Water resistanceIP68IP52
Supported untilMar 2030Apr 2029
15 Ultra 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.