PhoneLifespan

Agni 3 vs Redmi 15 5G

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 Agni 3 runs out in Oct 2028 ($8.83/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Agni 3 72 · 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.

Lava Agni 3 $245
Buy with care$8.83/mo
2024◆ Buy-by Oct 20262028
Xiaomi Redmi 15 5G $180
Safe to buy$4.80/mo
2025◆ Buy-by Aug 20272029

Category by category

Display
Agni 3 70Redmi 15 5G 70

Both displays are effectively the same class.

Performance
Agni 3 58Redmi 15 5G 46

The Agni 3's MediaTek Dimensity 7300X (4nm) is simply the faster chip.

Camera
Agni 3 79Redmi 15 5G 55

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

Battery
Agni 3 80Redmi 15 5G 100

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

Software longevity
Agni 3 33Redmi 15 5G 45

The Redmi 15 5G is supported until Aug 2029 — 10 months longer than the Agni 3.

Value
Agni 3 72Redmi 15 5G 75

Pound for pound, these two are equally good deals.

Full spec table
SpecAgni 3Redmi 15 5G
Price (street)$245$180
Display6.78-inch AMOLED, FHD+, 120Hz, 10-bit; plus a 1.74-inch secondary AMOLED on the back6.9-inch IPS LCD, FHD+, 144Hz, 850 nits peak
ChipsetMediaTek Dimensity 7300X (4nm)Qualcomm Snapdragon 6s Gen 3
RAM8GB4GB/6GB/8GB
Storage128GB/256GB128GB/256GB
Battery5,000 mAh7,000 mAh
Charging66W wired33W wired, 18W reverse wired
Rear cameras50MP main, 8MP ultra-wide, 8MP depth50MP main, 2MP depth
Dimensions163.7 × 75.5 × 8.8 mm169.5 × 80.5 × 8.4 mm
Weight212 g217 g
Water resistanceIP64IP64
Supported untilOct 2028Aug 2029
Agni 3 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.