400 vs Phone (3a) Pro

Phone 1

Phone 2

Winner

Honor 400

The 400 wins this one, taking battery and software longevity decisively. Against the Phone (3a) Pro it's also the sounder buy at $5.92 per month of safe use.

Value Score: 400 76 · Phone (3a) Pro 71 — 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

Nothing Phone (3a) Pro $429

Safe to buy$7.59/mo

2025◆ Buy-by Mar 20292031

Category by category

Display

400 80Phone (3a) Pro 80

Both displays are effectively the same class.

Performance

400 64Phone (3a) Pro 64

Performance is a wash — same chip tier.

Camera

400 72Phone (3a) Pro 79

The Phone (3a) Pro has the stronger camera system (3 real rear lenses vs 2).

Battery

400 86Phone (3a) Pro 80

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

Software longevity

400 70Phone (3a) Pro 67

The 400 is supported until May 2031 — 3 months longer than the Phone (3a) Pro.

Value

400 76Phone (3a) Pro 71

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

Full spec table

Spec	400	Phone (3a) Pro
Price (street)	$350	$429
Display	6.55-inch AMOLED, 1.5K, 120Hz, 5000 nits peak	6.77-inch AMOLED, 1080×2392 (FHD+), up to 120Hz, 3000 nits peak
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	Snapdragon 7s Gen 3
RAM	8GB/12GB	12GB
Storage	256GB/512GB	256GB
Battery	5,300 mAh	5,000 mAh
Charging	66W wired (5300mAh EU model), 5W reverse wired	50W wired, no wireless
Rear cameras	200MP main, 12MP ultra-wide	50MP main, 50MP periscope telephoto 3x, 8MP ultra-wide
Dimensions	156.5 × 74.6 × 7.3 mm	163.52 × 77.50 × 8.39 mm
Weight	184 g	211 g
Water resistance	IP65/IP66 (market dependent)	IP64
Supported until	May 2031	Mar 2031

400 full verdict →Phone (3a) Pro 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.