Poco C71 4G vs Redmi 15 5G

Phone 1

Phone 2

Winner

Xiaomi Redmi 15 5G

Lifespan decides this one: the Redmi 15 5G is supported until Aug 2029 at $4.80 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: Poco C71 4G 69 · Redmi 15 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 Poco C71 4G $75

Buy with care$2.23/mo

2025◆ Buy-by Apr 20272029

Xiaomi Redmi 15 5G $180

Safe to buy$4.80/mo

2025◆ Buy-by Aug 20272029

Category by category

Display

Poco C71 4G 70Redmi 15 5G 70

Both displays are effectively the same class.

Performance

Poco C71 4G 55Redmi 15 5G 46

The Poco C71 4G's Unisoc T7250 (12nm) is simply the faster chip.

Camera

Poco C71 4G 40Redmi 15 5G 55

The Redmi 15 5G has the stronger camera system — same lens count, higher-grade sensors.

Battery

Poco C71 4G 84Redmi 15 5G 100

7,000mAh vs 5,200mAh — the Redmi 15 5G lasts longer between charges.

Software longevity

Poco C71 4G 40Redmi 15 5G 45

The Redmi 15 5G is supported until Aug 2029 — 4 months longer than the Poco C71 4G.

Value

Poco C71 4G 69Redmi 15 5G 75

Overall value goes to the Redmi 15 5G at $4.80 per month of safe use.

Full spec table

Spec	Poco C71 4G	Redmi 15 5G
Price (street)	$75	$180
Display	6.88-inch IPS LCD, HD+, 120Hz	6.9-inch IPS LCD, FHD+, 144Hz, 850 nits peak
Chipset	Unisoc T7250 (12nm)	Qualcomm Snapdragon 6s Gen 3
RAM	4GB/6GB	4GB/6GB/8GB
Storage	64GB/128GB	128GB/256GB
Battery	5,200 mAh	7,000 mAh
Charging	15W wired	33W wired, 18W reverse wired
Rear cameras	32MP main	50MP main, 2MP depth
Dimensions	171.79 × 77.8 × 8.26 mm	169.5 × 80.5 × 8.4 mm
Weight	193 g	217 g
Water resistance	IP52	IP64
Supported until	Apr 2029	Aug 2029

Poco C71 4G full verdict →Redmi 15 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.