400 Pro vs X100 Ultra

Phone 1

Phone 2

Winner

Honor 400 Pro

Lifespan decides this one: the 400 Pro is supported until May 2031 at $11.85 per month of safe use, while the X100 Ultra runs out in May 2029 ($20.39/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 400 Pro 70 · X100 Ultra 66 — 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 Pro $700

Safe to buy$11.85/mo

2025◆ Buy-by May 20292031

Vivo X100 Ultra $720

Buy with care$20.39/mo

2024◆ Buy-by May 20272029

Category by category

Display

400 Pro 70X100 Ultra 90

The X100 Ultra's screen is the better one — 6.78-inch ltpo amoled, 120hz, 3000 nits peak.

Performance

400 Pro 92X100 Ultra 92

Performance is a wash — same chip tier.

Camera

400 Pro 84X100 Ultra 84

Camera systems are comparable on paper — pick by sample photos.

Battery

400 Pro 86X100 Ultra 90

5,500mAh vs 5,300mAh — the X100 Ultra lasts longer between charges.

Software longevity

400 Pro 70X100 Ultra 42

The 400 Pro is supported until May 2031 — 24 months longer than the X100 Ultra.

Value

400 Pro 70X100 Ultra 66

Overall value goes to the 400 Pro at $11.85 per month of safe use.

Full spec table

Spec	400 Pro	X100 Ultra
Price (street)	$700	$720
Display	6.7-inch AMOLED, 2800x1280, 120Hz	6.78-inch LTPO AMOLED, 120Hz, 3000 nits peak
Chipset	Qualcomm Snapdragon 8 Gen 3	Snapdragon 8 Gen 3
RAM	12GB/16GB	12GB/16GB
Storage	256GB/512GB	256GB/512GB/1TB
Battery	5,300 mAh	5,500 mAh
Charging	100W wired, 50W wireless	80W wired, 30W wireless
Rear cameras	200MP main, 50MP telephoto 3x, 12MP ultra-wide	50MP main, 200MP periscope telephoto, 50MP ultra-wide
Dimensions	160.8 × 76.1 × 8.1 mm	164.1 x 75.6 x 9.2 mm
Weight	205 g	229 g
Water resistance	IP68/IP69	IP68/IP69
Supported until	May 2031	May 2029

400 Pro full verdict →X100 Ultra 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.