ROG Phone 9 Pro vs 15 Pro

Phone 1

Phone 2

Winner

Xiaomi 15 Pro

The 15 Pro wins this one, taking display and software longevity decisively. Against the ROG Phone 9 Pro it's also the sounder buy at $12.37 per month of safe use.

Value Score: ROG Phone 9 Pro 60 · 15 Pro 74 — 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

Xiaomi 15 Pro $650

Safe to buy$12.37/mo

2024◆ Buy-by Oct 20282030

Category by category

Display

ROG Phone 9 Pro 6015 Pro 90

The 15 Pro's screen is the better one — 6.73-inch ltpo amoled, 3200 x 1440, 120hz.

Performance

ROG Phone 9 Pro 9815 Pro 98

Performance is a wash — same chip tier.

Camera

ROG Phone 9 Pro 7915 Pro 79

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

Battery

ROG Phone 9 Pro 9615 Pro 100

6,100mAh vs 5,800mAh — the 15 Pro lasts longer between charges.

Software longevity

ROG Phone 9 Pro 4915 Pro 63

The 15 Pro is supported until Oct 2030 — 11 months longer than the ROG Phone 9 Pro.

Value

ROG Phone 9 Pro 6015 Pro 74

Overall value goes to the 15 Pro at $12.37 per month of safe use.

Full spec table

Spec	ROG Phone 9 Pro	15 Pro
Price (street)	$1000	$650
Display	6.78-inch flexible LTPO AMOLED, FHD+ (1080×2400), 1–185Hz, 2500-nit peak	6.73-inch LTPO AMOLED, 3200 x 1440, 120Hz
Chipset	Snapdragon 8 Elite	Qualcomm Snapdragon 8 Elite
RAM	16GB/24GB	12GB/16GB
Storage	512GB/1TB	256GB/512GB/1TB
Battery	5,800 mAh	6,100 mAh
Charging	65W wired (HyperCharge), 15W Qi wireless	90W wired, 50W wireless
Rear cameras	50MP main (Sony Lytia 700 1/1.56-inch, gimbal OIS), 13MP ultra-wide (120-degree), 32MP telephoto 3x (OIS)	50MP main, 50MP ultra-wide, 50MP telephoto 5x
Dimensions	163.8 × 76.8 × 8.9 mm	161.3 × 74.6 × 8.4 mm
Weight	227 g	213 g
Water resistance	IP68	IP68
Supported until	Nov 2029	Oct 2030

ROG Phone 9 Pro full verdict →15 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.