ROG Phone 9 vs X100 Ultra

Phone 1

Phone 2

Winner

Asus ROG Phone 9

Lifespan decides this one: the ROG Phone 9 is supported until Nov 2029 at $24.33 per month of safe use, while the X100 Ultra runs out in May 2029 ($20.39/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: ROG Phone 9 58 · X100 Ultra 66 — 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$24.33/mo

2024◆ Buy-by Nov 20272029

Vivo X100 Ultra $720

Buy with care$20.39/mo

2024◆ Buy-by May 20272029

Category by category

Display

ROG Phone 9 60X100 Ultra 90

The X100 Ultra's screen is the better one — 6.78-inch ltpo amoled, 120hz, 3000 nits peak.

Performance

ROG Phone 9 98X100 Ultra 92

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

Camera

ROG Phone 9 67X100 Ultra 84

The X100 Ultra has the stronger camera system (3 real rear lenses vs 2).

Battery

ROG Phone 9 96X100 Ultra 90

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

Software longevity

ROG Phone 9 49X100 Ultra 42

The ROG Phone 9 is supported until Nov 2029 — 6 months longer than the X100 Ultra.

Value

ROG Phone 9 58X100 Ultra 66

Overall value goes to the X100 Ultra at $20.39 per month of safe use.

Full spec table

Spec	ROG Phone 9	X100 Ultra
Price (street)	$999	$720
Display	6.78-inch LTPO AMOLED, 1080x2400, 185Hz	6.78-inch LTPO AMOLED, 120Hz, 3000 nits peak
Chipset	Qualcomm Snapdragon 8 Elite	Snapdragon 8 Gen 3
RAM	12GB/16GB	12GB/16GB
Storage	256GB/512GB	256GB/512GB/1TB
Battery	5,800 mAh	5,500 mAh
Charging	65W wired, 15W wireless	80W wired, 30W wireless
Rear cameras	50MP main, 13MP ultra-wide, 5MP macro	50MP main, 200MP periscope telephoto, 50MP ultra-wide
Dimensions	163.8 × 76.8 × 8.9 mm	164.1 x 75.6 x 9.2 mm
Weight	227 g	229 g
Water resistance	IP68	IP68/IP69
Supported until	Nov 2029	May 2029

ROG Phone 9 full verdict →X100 Ultra 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.