Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| Wireless charging | 15 W | 50 W |
| Front camera | 16 MP | 32 MP |
| Refresh rate | 144 Hz | 120 Hz |
| Screen size | 6.85 " | 8.0 " |
| Weight | 227 g | 239 g |
| Battery capacity | 6150 mAh | 5700 mAh |
Between the Z70 Ultra and OnePlus Open 2, the Z70 Ultra comes out ahead in refresh rate / weight, while the OnePlus Open 2 wins on wireless charging / front camera. Overall, the Z70 Ultra scores 72.4 and the OnePlus Open 2 scores 71.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (72.4 vs 71.8). The decision is not about overall quality — both clear the bar — it is 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 refresh rate, weight, battery capacity. The single most decisive one: Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
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, front camera, screen size, among others. The single most decisive one: Wireless charging — 233.33% more. 50 W vs 15 W.
Both ship with comparable ram, main camera, 5g support, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Nubia - Z70 Ultra or OnePlus Open 2?
Nubia - Z70 Ultra leads the current Mars Score by 0.6 points.The more useful decision is the trade-off behind that result: compare screen size, pixel density, battery capacity against the way you will actually use the product.
Choose Nubia - Z70 Ultra if…
Nubia - Z70 Ultra has the measurable edge on refresh rate hz, weight g, battery capacity mah.
Choose OnePlus Open 2 if…
OnePlus Open 2 has the measurable edge on wireless charging w, front cam mp, screen size in.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Nubia - Z70 Ultra wins
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Weight — 12.00 g less. 227 vs 239.
- ▲Battery capacity — 7.89% more. 6150 mAh vs 5700 mAh.
Why OnePlus Open 2 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Front camera — 100.00% more. 32 MP vs 16 MP.
- ▲Screen size — 16.79% more. 8.0 " vs 6.85 ".
- ▲Pixel density — 3.61% more. 402 ppi vs 388 ppi.
- ▲AnTuTu — 1.52% more. 2680000 vs 2640000.
- ▲Promised OS updates: 4 (vs 3).
Spec comparison
Design
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| Weight | 227 glead | 239 g |
| Thickness | 8.7 mmlead | 11.7 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | foldable_booklead |
Display
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| Screen size | 6.85 " | 8.0 "lead |
| Pixel densityⓘ | 388 ppi | 402 ppilead |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 2000 nits | 4500 nitslead |
Performance
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| RAMⓘ | 16 GB | 16 GB |
| Storageⓘ | 512 GB | 512 GB |
| AnTuTuⓘ | 2640000 | 2680000lead |
| CPU total clockⓘ | 22.8 GHz | 22.8 GHz |
Cameras
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 16 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| Battery capacityⓘ | 6150 mAhlead | 5700 mAh |
| Wired chargingⓘ | 80 W | 80 W |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Nubia - Z70 Ultra | OnePlus Open 2 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 3 years | 4 yearslead |
Frequently asked
Which has better battery, Z70 Ultra or OnePlus Open 2?+
Z70 Ultra has 7.9% more battery — 6150 mAh vs 5700 mAh.
Which is lighter, Z70 Ultra or OnePlus Open 2?+
Z70 Ultra is 12g lighter — 227g vs 239g.
Is Z70 Ultra waterproof?+
Z70 Ultra has an IP68 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has a better camera, Z70 Ultra or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 50 MP.