ROG Phone 9 Pro vs 15

Phone 1

Phone 2

Winner

Xiaomi 15

The 15 wins this one, taking display and software longevity decisively. Against the ROG Phone 9 Pro it's also the sounder buy at $16.81 per month of safe use.

Value Score: ROG Phone 9 Pro 60 · 15 67 — 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 $750

Safe to buy$16.81/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

ROG Phone 9 Pro 6015 90

The 15's screen is the better one — 6.36-inch crystalres amoled, 2670×1200 (460 ppi), 1–120hz ltpo, up to 3200 nits peak, dolby vision/hdr10+.

Performance

ROG Phone 9 Pro 9815 98

Performance is a wash — same chip tier.

Camera

ROG Phone 9 Pro 7915 79

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

Battery

ROG Phone 9 Pro 9615 85

5,800mAh vs 5,240mAh — the ROG Phone 9 Pro lasts longer between charges.

Software longevity

ROG Phone 9 Pro 4915 53

The 15 is supported until Mar 2030 — 3 months longer than the ROG Phone 9 Pro.

Value

ROG Phone 9 Pro 6015 67

Overall value goes to the 15 at $16.81 per month of safe use.

Full spec table

Spec	ROG Phone 9 Pro	15
Price (street)	$1000	$750
Display	6.78-inch flexible LTPO AMOLED, FHD+ (1080×2400), 1–185Hz, 2500-nit peak	6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+
Chipset	Snapdragon 8 Elite	Snapdragon 8 Elite
RAM	16GB/24GB	12GB
Storage	512GB/1TB	256GB/512GB
Battery	5,800 mAh	5,240 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 (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)
Dimensions	163.8 × 76.8 × 8.9 mm	152.3 × 71.2 × 8.08 mm
Weight	227 g	191 g
Water resistance	IP68	IP68
Supported until	Nov 2029	Mar 2030

ROG Phone 9 Pro full verdict →15 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.