Between the Galaxy S26 and OnePlus Open 2, the Galaxy S26 comes out ahead in weight and pixel density, while the OnePlus Open 2 wins on wireless charging and front camera. Overall, the Galaxy S26 scores 64.6 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 9.9 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 Galaxy S26 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, front camera, wired charging, among others.
Both ship with comparable main camera, refresh rate, 5g support, 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 Samsung - Galaxy S26 wins
- ▲Weight — 71.00 g less. 168 vs 239.
- ▲Pixel density — 5.72% more. 425 ppi vs 402 ppi.
- ▲Promised OS updates: 7 (vs 4).
Why OnePlus Open 2 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲Wired charging — 77.78% more. 80 W vs 45 W.
- ▲Battery capacity — 42.50% more. 5700 mAh vs 4000 mAh.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Screen size — 29.03% more. 8.0 " vs 6.2 ".
- ▲AnTuTu — 24.65% more. 2680000 vs 2150000.
Spec comparison
Design
| Spec | Samsung - Galaxy S26 | OnePlus Open 2 |
|---|---|---|
| Weight | 168 glead | 239 g |
| Thickness | 7.4 mmlead | 11.7 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | foldable_booklead |
Display
| Spec | Samsung - Galaxy S26 | OnePlus Open 2 |
|---|---|---|
| Screen sizeⓘ | 6.2 " | 8.0 "lead |
| Pixel densityⓘ | 425 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2400 nits | 4500 nitslead |
Performance
Cameras
| Spec | Samsung - Galaxy S26 | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 12 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy S26 | OnePlus Open 2 |
|---|---|---|
| Battery capacity | 4000 mAh | 5700 mAhlead |
| Wired chargingⓘ | 45 W | 80 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Samsung - Galaxy S26 | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy S26 | OnePlus Open 2 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Galaxy S26 or OnePlus Open 2?+
OnePlus Open 2 has 42.5% more battery — 4000 mAh vs 5700 mAh.
Which is lighter, Galaxy S26 or OnePlus Open 2?+
Galaxy S26 is 71g lighter — 168g vs 239g.
Is Galaxy S26 waterproof?+
Galaxy S26 has an IP68 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has more RAM, Galaxy S26 or OnePlus Open 2?+
OnePlus Open 2 offers 16GB of RAM.
Which has a better camera, Galaxy S26 or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.