Between the iQOO 13 and OnePlus Open 2, the iQOO 13 comes out ahead in wired charging and pixel density, while the OnePlus Open 2 wins on screen size and wireless charging. Overall, the iQOO 13 scores 75.3 and the OnePlus Open 2 scores 74.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (75.3 vs 74.5). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the iQOO 13 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 wired charging, pixel density, weight, among others.
Pick the OnePlus Open 2 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are screen size, wireless charging.
Both ship with comparable ram, main camera, 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 Vivo - iQOO 13 wins
- ▲Wired charging — 50.00% more. 120 W vs 80 W.
- ▲Pixel density — 26.87% more. 510 ppi vs 402 ppi.
- ▲Weight — 26.00 g less. 213 vs 239.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Battery capacity — 7.89% more. 6150 mAh vs 5700 mAh.
- ▲AnTuTu — 5.22% more. 2820000 vs 2680000.
- ▲Water resistance: IP69 (vs IP68).
Why OnePlus Open 2 wins
- ▲Screen size — 17.30% more. 8.0 " vs 6.82 ".
- ▲Wireless charging: 50 W vs 0 W.
Spec comparison
Design
| Spec | Vivo - iQOO 13 | OnePlus Open 2 |
|---|---|---|
| Weight | 213 glead | 239 g |
| Thickness | 8.13 mmlead | 11.7 mm |
| Water resistanceⓘ | IP69lead | IP68 |
| Form factor | bar | foldable_booklead |
Display
| Spec | Vivo - iQOO 13 | OnePlus Open 2 |
|---|---|---|
| Screen sizeⓘ | 6.82 " | 8.0 "lead |
| Pixel densityⓘ | 510 ppilead | 402 ppi |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 4500 nits | 4500 nits |
Performance
Cameras
| Spec | Vivo - iQOO 13 | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Vivo - iQOO 13 | OnePlus Open 2 |
|---|---|---|
| Battery capacity | 6150 mAhlead | 5700 mAh |
| Wired chargingⓘ | 120 Wlead | 80 W |
| Wireless chargingⓘ | 0 W | 50 Wlead |
Connectivity
| Spec | Vivo - iQOO 13 | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Vivo - iQOO 13 | OnePlus Open 2 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, iQOO 13 or OnePlus Open 2?+
iQOO 13 has 7.9% more battery — 6150 mAh vs 5700 mAh.
Which is lighter, iQOO 13 or OnePlus Open 2?+
iQOO 13 is 26g lighter — 213g vs 239g.
Is iQOO 13 waterproof?+
iQOO 13 has an IP69 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has a better camera, iQOO 13 or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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