Between the Z70 Ultra and ROG Phone 9 Pro, the Z70 Ultra comes out ahead in wired charging and battery capacity, while the ROG Phone 9 Pro wins on front camera and ram. Overall, the Z70 Ultra scores 75.1 and the ROG Phone 9 Pro scores 77.7 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (75.1 vs 77.7). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Z70 Ultra if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are wired charging, battery capacity, screen size.
Pick the ROG Phone 9 Pro if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are front camera, ram, refresh rate, among others.
Both ship with comparable main camera, weight, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Nubia - Z70 Ultra wins
- ▲Wired charging — 23.08% more. 80 W vs 65 W.
- ▲Battery capacity — 6.03% more. 6150 mAh vs 5800 mAh.
- ▲Screen size — 1.03% more. 6.85 " vs 6.78 ".
Why ASUS - ROG Phone 9 Pro wins
- ▲Front camera — 100.00% more. 32 MP vs 16 MP.
- ▲RAM — 50.00% more. 24 GB vs 16 GB.
- ▲Refresh rate — 28.47% more. 185 Hz vs 144 Hz.
- ▲AnTuTu — 1.52% more. 2680000 vs 2640000.
- ▲Has Headphone jack.
Spec comparison
Design
| Spec | Nubia - Z70 Ultra | ASUS - ROG Phone 9 Pro |
|---|---|---|
| Weight | 227 g | 227 g |
| Thickness | 8.7 mmlead | 8.9 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Nubia - Z70 Ultra | ASUS - ROG Phone 9 Pro |
|---|---|---|
| Screen sizeⓘ | 6.85 "lead | 6.78 " |
| Pixel densityⓘ | 388 ppi | 388 ppi |
| Refresh rateⓘ | 144 Hz | 185 Hzlead |
| Peak brightnessⓘ | 2000 nits | 2500 nitslead |
Performance
Cameras
| Spec | Nubia - Z70 Ultra | ASUS - ROG Phone 9 Pro |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 16 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Nubia - Z70 Ultra | ASUS - ROG Phone 9 Pro |
|---|---|---|
| Battery capacity | 6150 mAhlead | 5800 mAh |
| Wired chargingⓘ | 80 Wlead | 65 W |
| Wireless chargingⓘ | 15 W | 15 W |
Connectivity
| Spec | Nubia - Z70 Ultra | ASUS - ROG Phone 9 Pro |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | truelead |
| microSD slot | false | false |
Operating System
| Spec | Nubia - Z70 Ultra | ASUS - ROG Phone 9 Pro |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 3 years | 3 years |
Frequently asked
Which has better battery, Z70 Ultra or ROG Phone 9 Pro?+
Z70 Ultra has 6.0% more battery — 6150 mAh vs 5800 mAh.
Which is lighter, Z70 Ultra or ROG Phone 9 Pro?+
ROG Phone 9 Pro is 0g lighter — 227g vs 227g.
Is Z70 Ultra waterproof?+
Z70 Ultra has an IP68 rating.
Does ROG Phone 9 Pro support 5G?+
Yes, ROG Phone 9 Pro supports 5G.
Which has more RAM, Z70 Ultra or ROG Phone 9 Pro?+
ROG Phone 9 Pro offers 24GB of RAM.
Which has a better camera, Z70 Ultra or ROG Phone 9 Pro?+
ROG Phone 9 Pro has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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