400 vs Moto G15

Phone 1

Phone 2

Winner

Honor 400

Lifespan decides this one: the 400 is supported until May 2031 at $5.92 per month of safe use, while the Moto G15 runs out in Feb 2028 ($8.81/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 400 76 · Moto G15 65 — 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

Motorola Moto G15 $175

Buy with care$8.81/mo

2025◆ Buy-by Feb 20262028

Category by category

Display

400 80Moto G15 70

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

Performance

400 64Moto G15 39

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

Camera

400 72Moto G15 55

The 400 has the stronger camera system (2 real rear lenses vs 1).

Battery

400 86Moto G15 84

Battery capacities are close enough not to decide this.

Software longevity

400 70Moto G15 24

The 400 is supported until May 2031 — 39 months longer than the Moto G15.

Value

400 76Moto G15 65

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

Full spec table

Spec	400	Moto G15
Price (street)	$350	$175
Display	6.55-inch AMOLED, 1.5K, 120Hz, 5000 nits peak	6.72-inch IPS LCD, FHD+, 120Hz
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	MediaTek Helio G81 Extreme
RAM	8GB/12GB	4GB/8GB
Storage	256GB/512GB	128GB/256GB/512GB
Battery	5,300 mAh	5,200 mAh
Charging	66W wired (5300mAh EU model), 5W reverse wired	18W wired
Rear cameras	200MP main, 12MP ultra-wide	50MP main, 2MP macro
Dimensions	156.5 × 74.6 × 7.3 mm	165.7 × 76 × 8.2 mm
Weight	184 g	190 g
Water resistance	IP65/IP66 (market dependent)	IP54
Supported until	May 2031	Feb 2028

400 full verdict →Moto G15 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.