Between the iPhone 15 Pro Max and OnePlus Open 2, the iPhone 15 Pro Max comes out ahead in weight and pixel density, while the OnePlus Open 2 wins on wireless charging and wired charging. Overall, the iPhone 15 Pro Max scores 63.2 and the OnePlus Open 2 scores 74.5 on our Mars Score.
Which should you buy?
The OnePlus Open 2 is the clear pick on raw spec strength, leading by 11.3 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 15 Pro Max 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 OnePlus Open 2 if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are wireless charging, wired charging, front camera, among others.
Both ship with comparable refresh rate, 5g support, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the OnePlus Open 2 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Apple - iPhone 15 Pro Max wins
- ▲Weight — 18.00 g less. 221 vs 239.
- ▲Pixel density — 14.43% more. 460 ppi vs 402 ppi.
- ▲Promised OS updates: 5 (vs 4).
Why OnePlus Open 2 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Wired charging — 196.30% more. 80 W vs 27 W.
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲RAM — 100.00% more. 16 GB vs 8 GB.
- ▲AnTuTu — 75.16% more. 2680000 vs 1530000.
- ▲Battery capacity — 28.90% more. 5700 mAh vs 4422 mAh.
- ▲Screen size — 19.40% more. 8.0 " vs 6.7 ".
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
Spec comparison
Design
| Spec | Apple - iPhone 15 Pro Max | OnePlus Open 2 |
|---|---|---|
| Weight | 221 glead | 239 g |
| Thickness | 8.25 mmlead | 11.7 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | foldable_booklead |
Display
| Spec | Apple - iPhone 15 Pro Max | OnePlus Open 2 |
|---|---|---|
| Screen sizeⓘ | 6.7 " | 8.0 "lead |
| Pixel densityⓘ | 460 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2000 nits | 4500 nitslead |
Performance
Cameras
| Spec | Apple - iPhone 15 Pro Max | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 12 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Apple - iPhone 15 Pro Max | OnePlus Open 2 |
|---|---|---|
| Battery capacity | 4422 mAh | 5700 mAhlead |
| Wired chargingⓘ | 27 W | 80 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Apple - iPhone 15 Pro Max | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Apple - iPhone 15 Pro Max | OnePlus Open 2 |
|---|---|---|
| OS | iOSlead | Android |
| Promised OS updates | 5 yearslead | 4 years |
Frequently asked
Which has better battery, iPhone 15 Pro Max or OnePlus Open 2?+
OnePlus Open 2 has 28.9% more battery — 4422 mAh vs 5700 mAh.
Which is lighter, iPhone 15 Pro Max or OnePlus Open 2?+
iPhone 15 Pro Max is 18g lighter — 221g vs 239g.
Is iPhone 15 Pro Max waterproof?+
iPhone 15 Pro Max has an IP68 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has more RAM, iPhone 15 Pro Max or OnePlus Open 2?+
OnePlus Open 2 offers 16GB of RAM.
Which has a better camera, iPhone 15 Pro Max or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 48 MP.
Spec-level deep dives
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