Between the Razr 50 Ultra and ROG Phone 9, the Razr 50 Ultra comes out ahead in weight / pixel density, while the ROG Phone 9 wins on antutu / battery capacity. Overall, the Razr 50 Ultra scores 65.6 and the ROG Phone 9 scores 75.1 on our Mars Score.
Which should you buy?
The ROG Phone 9 is the clear pick on raw spec strength, leading by 9.5 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Razr 50 Ultra if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, pixel density, screen size, among others.
Pick the ROG Phone 9 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are antutu, battery capacity, wired charging, among others.
Both ship with comparable main camera, 5g support, front camera, so those specs do not separate the two — focus on the differences below.
Bottom line: the ROG Phone 9 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Motorola - Razr 50 Ultra wins
- ▲Weight — 38.00 g less. 189 vs 227.
- ▲Pixel density — 6.44% more. 413 ppi vs 388 ppi.
- ▲Screen size — 1.77% more. 6.9 " vs 6.78 ".
- ▲Water resistance: IPX8 (vs IP68).
Why ASUS - ROG Phone 9 wins
- ▲AnTuTu — 60.25% more. 2580000 vs 1610000.
- ▲Battery capacity — 45.00% more. 5800 mAh vs 4000 mAh.
- ▲Wired charging — 44.44% more. 65 W vs 45 W.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Refresh rate — 12.12% more. 185 Hz vs 165 Hz.
- ▲Has Headphone jack.
Spec comparison
Design
| Spec | Motorola - Razr 50 Ultra | ASUS - ROG Phone 9 |
|---|---|---|
| Weight | 189 glead | 227 g |
| Thickness | 7.1 mmlead | 8.9 mm |
| Water resistanceⓘ | IPX8lead | IP68 |
| Form factor | foldable_clamshelllead | bar |
Display
| Spec | Motorola - Razr 50 Ultra | ASUS - ROG Phone 9 |
|---|---|---|
| Screen sizeⓘ | 6.9 "lead | 6.78 " |
| Pixel densityⓘ | 413 ppilead | 388 ppi |
| Refresh rateⓘ | 165 Hz | 185 Hzlead |
| Peak brightnessⓘ | 3000 nitslead | 2500 nits |
Performance
Cameras
| Spec | Motorola - Razr 50 Ultra | ASUS - ROG Phone 9 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Motorola - Razr 50 Ultra | ASUS - ROG Phone 9 |
|---|---|---|
| Battery capacity | 4000 mAh | 5800 mAhlead |
| Wired chargingⓘ | 45 W | 65 Wlead |
| Wireless chargingⓘ | 15 W | 15 W |
Connectivity
| Spec | Motorola - Razr 50 Ultra | ASUS - ROG Phone 9 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | truelead |
| microSD slot | false | false |
Operating System
| Spec | Motorola - Razr 50 Ultra | ASUS - ROG Phone 9 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 3 years | 3 years |
Frequently asked
Which has better battery, Razr 50 Ultra or ROG Phone 9?+
ROG Phone 9 has 45.0% more battery — 4000 mAh vs 5800 mAh.
Which is lighter, Razr 50 Ultra or ROG Phone 9?+
Razr 50 Ultra is 38g lighter — 189g vs 227g.
Is Razr 50 Ultra waterproof?+
Razr 50 Ultra has an IPX8 rating.
Does ROG Phone 9 support 5G?+
Yes, ROG Phone 9 supports 5G.
Which has more RAM, Razr 50 Ultra or ROG Phone 9?+
ROG Phone 9 offers 16GB of RAM.
Which has a better camera, Razr 50 Ultra or ROG Phone 9?+
ROG Phone 9 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.