ROG Phone 8 vs Galaxy S25 Ultra

Phone 1

Phone 2

Winner

Samsung Galaxy S25 Ultra

Lifespan decides this one: the Galaxy S25 Ultra is supported until Feb 2032 at $13.30 per month of safe use, while the ROG Phone 8 runs out in Jan 2029 ($27.25/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: ROG Phone 8 60 · Galaxy S25 Ultra 75 — 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$27.25/mo

2024◆ Buy-by Jan 20272029

Samsung Galaxy S25 Ultra $902

Safe to buy$13.30/mo

2025◆ Buy-by Feb 20302032

Category by category

Display

ROG Phone 8 80Galaxy S25 Ultra 100

The Galaxy S25 Ultra's screen is the better one — 6.9-inch dynamic ltpo amoled 2x, qhd+, 1–120hz, up to 2600 nits.

Performance

ROG Phone 8 92Galaxy S25 Ultra 98

The Galaxy S25 Ultra's Snapdragon 8 Elite for Galaxy is simply the faster chip.

Camera

ROG Phone 8 79Galaxy S25 Ultra 96

The Galaxy S25 Ultra has the stronger camera system (4 real rear lenses vs 3).

Battery

ROG Phone 8 90Galaxy S25 Ultra 80

5,500mAh vs 5,000mAh — the ROG Phone 8 lasts longer between charges.

Software longevity

ROG Phone 8 37Galaxy S25 Ultra 81

The Galaxy S25 Ultra is supported until Feb 2032 — 37 months longer than the ROG Phone 8.

Value

ROG Phone 8 60Galaxy S25 Ultra 75

Overall value goes to the Galaxy S25 Ultra at $13.30 per month of safe use.

Full spec table

Spec	ROG Phone 8	Galaxy S25 Ultra
Price (street)	$850	$902
Display	6.78-inch LTPO AMOLED, 1080x2400, 165Hz	6.9-inch Dynamic LTPO AMOLED 2X, QHD+, 1–120Hz, up to 2600 nits
Chipset	Qualcomm Snapdragon 8 Gen 3	Snapdragon 8 Elite for Galaxy
RAM	12GB/16GB	12GB
Storage	256GB/512GB	256GB/512GB/1TB
Battery	5,500 mAh	5,000 mAh
Charging	65W wired, 15W wireless	45W wired (65% in 30 min), 15W wireless (Qi2 Ready), 4.5W reverse wireless
Rear cameras	50MP main, 13MP ultra-wide, 32MP telephoto 3x	200MP main, 50MP ultra-wide, 10MP telephoto 3x, 50MP periscope 5x
Dimensions	163.8 × 76.8 × 8.9 mm	162.8 × 77.6 × 8.2 mm
Weight	225 g	218 g
Water resistance	IP68	IP68
Supported until	Jan 2029	Feb 2032

ROG Phone 8 full verdict →Galaxy S25 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.