PhoneLifespan

400 vs Agni 3

vs

Winner

Honor 400

Lifespan decides this one: the 400 is supported until May 2031 at $5.92 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: 400 76 · Agni 3 72 — methodology

The lifespan decider

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

Honor 400 $350
Safe to buy$5.92/mo
2025◆ Buy-by May 20292031
Lava Agni 3 $245
Buy with care$8.83/mo
2024◆ Buy-by Oct 20262028

Category by category

Display
400 80Agni 3 70

The 400's screen is the better one — 6.55-inch amoled, 1.5k, 120hz, 5000 nits peak.

Performance
400 64Agni 3 58

The 400's Qualcomm Snapdragon 7 Gen 3 (4nm) is simply the faster chip.

Camera
400 72Agni 3 79

The Agni 3 has the stronger camera system (3 real rear lenses vs 2).

Battery
400 86Agni 3 80

5,300mAh vs 5,000mAh — the 400 lasts longer between charges.

Software longevity
400 70Agni 3 33

The 400 is supported until May 2031 — 31 months longer than the Agni 3.

Value
400 76Agni 3 72

Overall value goes to the 400 at $5.92 per month of safe use.

Full spec table
Spec400Agni 3
Price (street)$350$245
Display6.55-inch AMOLED, 1.5K, 120Hz, 5000 nits peak6.78-inch AMOLED, FHD+, 120Hz, 10-bit; plus a 1.74-inch secondary AMOLED on the back
ChipsetQualcomm Snapdragon 7 Gen 3 (4nm)MediaTek Dimensity 7300X (4nm)
RAM8GB/12GB8GB
Storage256GB/512GB128GB/256GB
Battery5,300 mAh5,000 mAh
Charging66W wired (5300mAh EU model), 5W reverse wired66W wired
Rear cameras200MP main, 12MP ultra-wide50MP main, 8MP ultra-wide, 8MP depth
Dimensions156.5 × 74.6 × 7.3 mm163.7 × 75.5 × 8.8 mm
Weight184 g212 g
Water resistanceIP65/IP66 (market dependent)IP64
Supported untilMay 2031Oct 2028
400 full verdict →Agni 3 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.