PhoneLifespan

P3x 5G vs Poco C71 4G

vs

Winner

Xiaomi Poco C71 4G

Lifespan decides this one: the Poco C71 4G is supported until Apr 2029 at $2.23 per month of safe use, while the P3x 5G runs out in Feb 2029 ($4.64/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: P3x 5G 73 · 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.

Realme P3x 5G $150
Buy with care$4.64/mo
2025◆ Buy-by Feb 20272029
Xiaomi Poco C71 4G $75
Buy with care$2.23/mo
2025◆ Buy-by Apr 20272029

Category by category

Display
P3x 5G 70Poco C71 4G 70

Both displays are effectively the same class.

Performance
P3x 5G 55Poco C71 4G 55

Performance is a wash — same chip tier.

Camera
P3x 5G 55Poco C71 4G 40

The P3x 5G has the stronger camera system — same lens count, higher-grade sensors.

Battery
P3x 5G 100Poco C71 4G 84

6,000mAh vs 5,200mAh — the P3x 5G lasts longer between charges.

Software longevity
P3x 5G 38Poco C71 4G 40

Both phones' support windows end around the same time.

Value
P3x 5G 73Poco C71 4G 69

Overall value goes to the P3x 5G at $4.64 per month of safe use.

Full spec table
SpecP3x 5GPoco C71 4G
Price (street)$150$75
Display6.72-inch IPS LCD, FHD+, 120Hz6.88-inch IPS LCD, HD+, 120Hz
ChipsetMediaTek Dimensity 6400 (6nm)Unisoc T7250 (12nm)
RAM6GB/8GB4GB/6GB
Storage128GB64GB/128GB
Battery6,000 mAh5,200 mAh
Charging45W wired SuperVOOC15W wired
Rear cameras50MP main, 2MP depth32MP main
Dimensions165.7 × 76.2 × 7.99 mm171.79 × 77.8 × 8.26 mm
Weight197 g193 g
Water resistanceIP68/IP69IP52
Supported untilFeb 2029Apr 2029
P3x 5G 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.