PhoneLifespan

ROG Phone 9 Pro vs Galaxy S25 Ultra

vs

Winner

Samsung Galaxy S25 Ultra

The Galaxy S25 Ultra wins this one, taking display and software longevity decisively. Against the ROG Phone 9 Pro it's also the sounder buy at $13.34 per month of safe use.

Value Score: ROG Phone 9 Pro 59 · 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 9 Pro $1000
Safe to buy$24.36/mo
2024◆ Buy-by Nov 20272029
Samsung Galaxy S25 Ultra $902
Safe to buy$13.34/mo
2025◆ Buy-by Feb 20302032

Category by category

Display
ROG Phone 9 Pro 60Galaxy 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 9 Pro 98Galaxy S25 Ultra 98

Performance is a wash — same chip tier.

Camera
ROG Phone 9 Pro 79Galaxy S25 Ultra 96

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

Battery
ROG Phone 9 Pro 96Galaxy S25 Ultra 80

5,800mAh vs 5,000mAh — the ROG Phone 9 Pro lasts longer between charges.

Software longevity
ROG Phone 9 Pro 49Galaxy S25 Ultra 81

The Galaxy S25 Ultra is supported until Feb 2032 — 27 months longer than the ROG Phone 9 Pro.

Value
ROG Phone 9 Pro 59Galaxy S25 Ultra 75

Overall value goes to the Galaxy S25 Ultra at $13.34 per month of safe use.

Full spec table
SpecROG Phone 9 ProGalaxy S25 Ultra
Price (street)$1000$902
Display6.78-inch flexible LTPO AMOLED, FHD+ (1080×2400), 1–185Hz, 2500-nit peak6.9-inch Dynamic LTPO AMOLED 2X, QHD+, 1–120Hz, up to 2600 nits
ChipsetSnapdragon 8 EliteSnapdragon 8 Elite for Galaxy
RAM16GB/24GB12GB
Storage512GB/1TB256GB/512GB/1TB
Battery5,800 mAh5,000 mAh
Charging65W wired (HyperCharge), 15W Qi wireless45W wired (65% in 30 min), 15W wireless (Qi2 Ready), 4.5W reverse wireless
Rear cameras50MP main (Sony Lytia 700 1/1.56-inch, gimbal OIS), 13MP ultra-wide (120-degree), 32MP telephoto 3x (OIS)200MP main, 50MP ultra-wide, 10MP telephoto 3x, 50MP periscope 5x
Dimensions163.8 × 76.8 × 8.9 mm162.8 × 77.6 × 8.2 mm
Weight227 g218 g
Water resistanceIP68IP68
Supported untilNov 2029Feb 2032
ROG Phone 9 Pro 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.