ROG Phone 8 vs 15 Pro

Phone 1

Phone 2

Winner

Xiaomi 15 Pro

Lifespan decides this one: the 15 Pro is supported until Oct 2030 at $12.42 per month of safe use, while the ROG Phone 8 runs out in Jan 2029 ($27.42/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: ROG Phone 8 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 8 $850

Buy with care$27.42/mo

2024◆ Buy-by Jan 20272029

Xiaomi 15 Pro $650

Safe to buy$12.42/mo

2024◆ Buy-by Oct 20282030

Category by category

Display

ROG Phone 8 8015 Pro 90

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

Performance

ROG Phone 8 9215 Pro 98

The 15 Pro's Qualcomm Snapdragon 8 Elite is simply the faster chip.

Camera

ROG Phone 8 7915 Pro 79

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

Battery

ROG Phone 8 9015 Pro 100

6,100mAh vs 5,500mAh — the 15 Pro lasts longer between charges.

Software longevity

ROG Phone 8 3715 Pro 62

The 15 Pro is supported until Oct 2030 — 21 months longer than the ROG Phone 8.

Value

ROG Phone 8 6015 Pro 74

Overall value goes to the 15 Pro at $12.42 per month of safe use.

Full spec table

Spec	ROG Phone 8	15 Pro
Price (street)	$850	$650
Display	6.78-inch LTPO AMOLED, 1080x2400, 165Hz	6.73-inch LTPO AMOLED, 3200 x 1440, 120Hz
Chipset	Qualcomm Snapdragon 8 Gen 3	Qualcomm Snapdragon 8 Elite
RAM	12GB/16GB	12GB/16GB
Storage	256GB/512GB	256GB/512GB/1TB
Battery	5,500 mAh	6,100 mAh
Charging	65W wired, 15W wireless	90W wired, 50W wireless
Rear cameras	50MP main, 13MP ultra-wide, 32MP telephoto 3x	50MP main, 50MP ultra-wide, 50MP telephoto 5x
Dimensions	163.8 × 76.8 × 8.9 mm	161.3 × 74.6 × 8.4 mm
Weight	225 g	213 g
Water resistance	IP68	IP68
Supported until	Jan 2029	Oct 2030

ROG Phone 8 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.