Between the iPhone 17 Air and ROG Phone 9, the iPhone 17 Air comes out ahead in weight and pixel density, while the ROG Phone 9 wins on wired charging and front camera. Overall, the iPhone 17 Air scores 60.3 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 14.8 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 iPhone 17 Air 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, promised os updates.
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 wired charging, front camera, battery capacity, among others.
Both ship with comparable 5g support, water resistance, optical image stabilization, so those specs don't 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 Apple - iPhone 17 Air wins
- ▲Weight — 81.00 g less. 146 vs 227.
- ▲Pixel density — 18.56% more. 460 ppi vs 388 ppi.
- ▲Promised OS updates: 6 (vs 3).
Why ASUS - ROG Phone 9 wins
- ▲Wired charging — 225.00% more. 65 W vs 20 W.
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲Battery capacity — 100.00% more. 5800 mAh vs 2900 mAh.
- ▲RAM — 100.00% more. 16 GB vs 8 GB.
- ▲Refresh rate — 54.17% more. 185 Hz vs 120 Hz.
- ▲AnTuTu — 31.63% more. 2580000 vs 1960000.
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
- ▲Screen size — 2.73% more. 6.78 " vs 6.6 ".
Spec comparison
Design
| Spec | Apple - iPhone 17 Air | ASUS - ROG Phone 9 |
|---|---|---|
| Weight | 146 glead | 227 g |
| Thickness | 5.6 mmlead | 8.9 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Apple - iPhone 17 Air | ASUS - ROG Phone 9 |
|---|---|---|
| Screen sizeⓘ | 6.6 " | 6.78 "lead |
| Pixel densityⓘ | 460 ppilead | 388 ppi |
| Refresh rateⓘ | 120 Hz | 185 Hzlead |
| Peak brightnessⓘ | 2200 nits | 2500 nitslead |
Performance
Cameras
| Spec | Apple - iPhone 17 Air | ASUS - ROG Phone 9 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 12 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Apple - iPhone 17 Air | ASUS - ROG Phone 9 |
|---|---|---|
| Battery capacity | 2900 mAh | 5800 mAhlead |
| Wired chargingⓘ | 20 W | 65 Wlead |
| Wireless chargingⓘ | 15 W | 15 W |
Connectivity
| Spec | Apple - iPhone 17 Air | ASUS - ROG Phone 9 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | truelead |
| microSD slot | false | false |
Operating System
| Spec | Apple - iPhone 17 Air | ASUS - ROG Phone 9 |
|---|---|---|
| OS | iOSlead | Android |
| Promised OS updates | 6 yearslead | 3 years |
Frequently asked
Which has better battery, iPhone 17 Air or ROG Phone 9?+
ROG Phone 9 has 100.0% more battery — 2900 mAh vs 5800 mAh.
Which is lighter, iPhone 17 Air or ROG Phone 9?+
iPhone 17 Air is 81g lighter — 146g vs 227g.
Is iPhone 17 Air waterproof?+
iPhone 17 Air has an IP68 rating.
Does ROG Phone 9 support 5G?+
Yes, ROG Phone 9 supports 5G.
Which has more RAM, iPhone 17 Air or ROG Phone 9?+
ROG Phone 9 offers 16GB of RAM.
Which has a better camera, iPhone 17 Air or ROG Phone 9?+
ROG Phone 9 has a 50 MP main camera vs 48 MP.
Spec-level deep dives
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