400 vs 15 Pro 5G

Phone 1

Phone 2

Winner

Honor 400

The 400 wins this one, taking software longevity and performance decisively. Against the 15 Pro 5G it's also the sounder buy at $5.92 per month of safe use.

Value Score: 400 76 · 15 Pro 5G 69 — 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

Realme 15 Pro 5G $330

Safe to buy$8.82/mo

2025◆ Buy-by Jul 20272029

Category by category

Display

400 8015 Pro 5G 80

Both displays are effectively the same class.

Performance

400 6415 Pro 5G 55

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

Camera

400 7215 Pro 5G 67

The 400 has the stronger camera system — same lens count, higher-grade sensors.

Battery

400 8615 Pro 5G 100

7,000mAh vs 5,300mAh — the 15 Pro 5G lasts longer between charges.

Software longevity

400 7015 Pro 5G 45

The 400 is supported until May 2031 — 22 months longer than the 15 Pro 5G.

Value

400 7615 Pro 5G 69

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

Full spec table

Spec	400	15 Pro 5G
Price (street)	$350	$330
Display	6.55-inch AMOLED, 1.5K, 120Hz, 5000 nits peak	6.8-inch AMOLED, 1.5K, 144Hz, up to 6500 nits peak, HDR10+, curved
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	Qualcomm Snapdragon 7 Gen 4 (4nm)
RAM	8GB/12GB	8GB/12GB
Storage	256GB/512GB	128GB/256GB/512GB
Battery	5,300 mAh	7,000 mAh
Charging	66W wired (5300mAh EU model), 5W reverse wired	80W wired SuperVOOC
Rear cameras	200MP main, 12MP ultra-wide	50MP main, 50MP ultra-wide
Dimensions	156.5 × 74.6 × 7.3 mm	162.3 × 76.2 × 7.7 mm
Weight	184 g	187 g
Water resistance	IP65/IP66 (market dependent)	IP68/IP69 (also MIL-STD-810H)
Supported until	May 2031	Jul 2029

400 full verdict →15 Pro 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.