PhoneLifespan

Redmi 15 5G vs Redmi A5

vs

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 Redmi A5 runs out in Mar 2028 ($3.55/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Redmi 15 5G 75 · Redmi A5 65 — methodology

The lifespan decider

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

Xiaomi Redmi 15 5G $180
Safe to buy$4.80/mo
2025◆ Buy-by Aug 20272029
Xiaomi Redmi A5 $75
Buy with care$3.55/mo
2025◆ Buy-by Mar 20262028

Category by category

Display
Redmi 15 5G 70Redmi A5 70

Both displays are effectively the same class.

Performance
Redmi 15 5G 46Redmi A5 55

The Redmi A5's Unisoc T7250 is simply the faster chip.

Camera
Redmi 15 5G 55Redmi A5 40

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

Battery
Redmi 15 5G 100Redmi A5 84

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

Software longevity
Redmi 15 5G 45Redmi A5 25

The Redmi 15 5G is supported until Aug 2029 — 16 months longer than the Redmi A5.

Value
Redmi 15 5G 75Redmi A5 65

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

Full spec table
SpecRedmi 15 5GRedmi A5
Price (street)$180$75
Display6.9-inch IPS LCD, FHD+, 144Hz, 850 nits peak6.88-inch IPS LCD, HD+, 120Hz
ChipsetQualcomm Snapdragon 6s Gen 3Unisoc T7250
RAM4GB/6GB/8GB3GB/4GB/6GB
Storage128GB/256GB64GB/128GB
Battery7,000 mAh5,200 mAh
Charging33W wired, 18W reverse wired15W wired
Rear cameras50MP main, 2MP depth32MP main
Dimensions169.5 × 80.5 × 8.4 mm171.4 × 77.8 × 8.3 mm
Weight217 g193 g
Water resistanceIP64IP52
Supported untilAug 2029Mar 2028
Redmi 15 5G full verdict →Redmi A5 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.