400 vs 12 Pro

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 12 Pro runs out in Jan 2028 ($12.65/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 400 76 · 12 Pro 63 — 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 12 Pro $245

Buy with care$12.65/mo

2024◆ Buy-by Jan 20262028

Category by category

Display

400 8012 Pro 70

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

Performance

400 6412 Pro 46

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

Camera

400 7212 Pro 79

The 12 Pro has the stronger camera system (3 real rear lenses vs 2).

Battery

400 8612 Pro 80

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

Software longevity

400 7012 Pro 23

The 400 is supported until May 2031 — 40 months longer than the 12 Pro.

Value

400 7612 Pro 63

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

Full spec table

Spec	400	12 Pro
Price (street)	$350	$245
Display	6.55-inch AMOLED, 1.5K, 120Hz, 5000 nits peak	6.7-inch AMOLED, FHD+, 120Hz, 950 nits peak
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	Qualcomm Snapdragon 6 Gen 1
RAM	8GB/12GB	8GB/12GB
Storage	256GB/512GB	128GB/256GB/512GB
Battery	5,300 mAh	5,000 mAh
Charging	66W wired (5300mAh EU model), 5W reverse wired	67W wired
Rear cameras	200MP main, 12MP ultra-wide	50MP main, 32MP telephoto 2x, 8MP ultra-wide
Dimensions	156.5 × 74.6 × 7.3 mm	161.5 x 74 x 8.8 mm
Weight	184 g	190 g
Water resistance	IP65/IP66 (market dependent)	IP65
Supported until	May 2031	Jan 2028

400 full verdict →12 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.