PhoneLifespan

ROG Phone 9 Pro vs 400 Pro

vs

Winner

Honor 400 Pro

Lifespan decides this one: the 400 Pro is supported until May 2031 at $11.81 per month of safe use, while the ROG Phone 9 Pro runs out in Nov 2029 ($24.24/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: ROG Phone 9 Pro 60 · 400 Pro 70 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Asus ROG Phone 9 Pro $1000
Safe to buy$24.24/mo
2024◆ Buy-by Nov 20272029
Honor 400 Pro $700
Safe to buy$11.81/mo
2025◆ Buy-by May 20292031

Category by category

Display
ROG Phone 9 Pro 60400 Pro 70

The 400 Pro's screen is the better one — 6.7-inch amoled, 2800x1280, 120hz.

Performance
ROG Phone 9 Pro 98400 Pro 92

The ROG Phone 9 Pro's Snapdragon 8 Elite is simply the faster chip.

Camera
ROG Phone 9 Pro 79400 Pro 84

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

Battery
ROG Phone 9 Pro 96400 Pro 86

5,800mAh vs 5,300mAh — the ROG Phone 9 Pro lasts longer between charges.

Software longevity
ROG Phone 9 Pro 49400 Pro 71

The 400 Pro is supported until May 2031 — 18 months longer than the ROG Phone 9 Pro.

Value
ROG Phone 9 Pro 60400 Pro 70

Overall value goes to the 400 Pro at $11.81 per month of safe use.

Full spec table
SpecROG Phone 9 Pro400 Pro
Price (street)$1000$700
Display6.78-inch flexible LTPO AMOLED, FHD+ (1080×2400), 1–185Hz, 2500-nit peak6.7-inch AMOLED, 2800x1280, 120Hz
ChipsetSnapdragon 8 EliteQualcomm Snapdragon 8 Gen 3
RAM16GB/24GB12GB/16GB
Storage512GB/1TB256GB/512GB
Battery5,800 mAh5,300 mAh
Charging65W wired (HyperCharge), 15W Qi wireless100W wired, 50W wireless
Rear cameras50MP main (Sony Lytia 700 1/1.56-inch, gimbal OIS), 13MP ultra-wide (120-degree), 32MP telephoto 3x (OIS)200MP main, 50MP telephoto 3x, 12MP ultra-wide
Dimensions163.8 × 76.8 × 8.9 mm160.8 × 76.1 × 8.1 mm
Weight227 g205 g
Water resistanceIP68IP68/IP69
Supported untilNov 2029May 2031
ROG Phone 9 Pro full verdict →400 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.