PhoneLifespan

ROG Phone 9 vs 15T Pro

vs

Winner

Xiaomi 15T Pro

The 15T Pro wins this one, taking camera and software longevity decisively. Against the ROG Phone 9 it's also the sounder buy at $12.65 per month of safe use.

Value Score: ROG Phone 9 58 · 15T Pro 69 — 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 $999
Safe to buy$24.24/mo
2024◆ Buy-by Nov 20272029
Xiaomi 15T Pro $650
Safe to buy$12.65/mo
2025◆ Buy-by Sep 20282030

Category by category

Display
ROG Phone 9 6015T Pro 70

The 15T Pro's screen is the better one — 6.83-inch amoled, 2772x1280, 144hz.

Performance
ROG Phone 9 9815T Pro 94

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

Camera
ROG Phone 9 6715T Pro 79

The 15T Pro has the stronger camera system (3 real rear lenses vs 2).

Battery
ROG Phone 9 9615T Pro 90

5,800mAh vs 5,500mAh — the ROG Phone 9 lasts longer between charges.

Software longevity
ROG Phone 9 4915T Pro 61

The 15T Pro is supported until Sep 2030 — 10 months longer than the ROG Phone 9.

Value
ROG Phone 9 5815T Pro 69

Overall value goes to the 15T Pro at $12.65 per month of safe use.

Full spec table
SpecROG Phone 915T Pro
Price (street)$999$650
Display6.78-inch LTPO AMOLED, 1080x2400, 185Hz6.83-inch AMOLED, 2772x1280, 144Hz
ChipsetQualcomm Snapdragon 8 EliteMediaTek Dimensity 9400+
RAM12GB/16GB12GB
Storage256GB/512GB256GB/512GB/1TB
Battery5,800 mAh5,500 mAh
Charging65W wired, 15W wireless90W wired, 50W wireless
Rear cameras50MP main, 13MP ultra-wide, 5MP macro50MP main, 50MP telephoto 5x periscope, 12MP ultra-wide
Dimensions163.8 × 76.8 × 8.9 mm162.7 × 77.9 × 8.0 mm
Weight227 g210 g
Water resistanceIP68IP68
Supported untilNov 2029Sep 2030
ROG Phone 9 full verdict →15T 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.