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OnePlus 15 vs OnePlus Open 2

Last updated · How Mars Score works
OnePlus 15ONEPLUSRENDER
Probe A
OnePlus
OnePlus 15
78.4/ 100A
Performance81· 25%
Battery90· 20%
Display70· 18%
Cameras70· 18%
Design· 8%
Connectivity· 7%
Operating System· 4%
OnePlus Open 2ONEPLUSRENDER
Probe B
OnePlus
OnePlus Open 2
74.5/ 100B
Performance79· 25%
Battery71· 20%
Display78· 18%
Cameras70· 18%
Design· 8%
Connectivity· 7%
Operating System· 4%
Quick verdict

Between the OnePlus 15 and OnePlus Open 2, the OnePlus 15 comes out ahead in wired charging and battery capacity, while the OnePlus Open 2 wins on screen size. Overall, the OnePlus 15 scores 78.4 and the OnePlus Open 2 scores 74.5 on our Mars Score.

Buying advice

Which should you buy?

The OnePlus 15 edges ahead on the Mars Score (78.4 vs 74.5), but the 3.9-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the OnePlus 15 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 wired charging, battery capacity, 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.

Both ship with comparable ram, main camera, refresh rate, 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 OnePlus 15 wins

  • Wired charging — 50.00% more. 120 W vs 80 W.
  • Battery capacity — 31.58% more. 7500 mAh vs 5700 mAh.
  • Weight — 28.00 g less. 211 vs 239.
  • Pixel density — 11.94% more. 450 ppi vs 402 ppi.
  • AnTuTu — 10.07% more. 2950000 vs 2680000.
  • Water resistance: IP69 (vs IP68).
  • Promised OS updates: 5 (vs 4).

Why OnePlus Open 2 wins

  • Screen size — 17.99% more. 8.0 " vs 6.78 ".
Full readout

Spec comparison

Design

SpecOnePlus 15OnePlus Open 2
Weight211 glead239 g
Thickness8.3 mmlead11.7 mm
Water resistanceIP69leadIP68
Form factorbarfoldable_booklead

Display

SpecOnePlus 15OnePlus Open 2
Screen size6.78 "8.0 "lead
Pixel density450 ppilead402 ppi
Refresh rate120 Hz120 Hz
Peak brightness4500 nits4500 nits

Performance

SpecOnePlus 15OnePlus Open 2
RAM16 GB16 GB
Storage512 GB512 GB
AnTuTu2950000lead2680000
CPU total clock23.6 GHzlead22.8 GHz

Cameras

SpecOnePlus 15OnePlus Open 2
Main camera50 MP50 MP
Front camera32 MP32 MP
Optical image stabilizationtruetrue

Battery

SpecOnePlus 15OnePlus Open 2
Battery capacity7500 mAhlead5700 mAh
Wired charging120 Wlead80 W
Wireless charging50 W50 W

Connectivity

SpecOnePlus 15OnePlus Open 2
5G supporttruetrue
Headphone jackfalsefalse
microSD slotfalsefalse

Operating System

SpecOnePlus 15OnePlus Open 2
OSAndroidAndroid
Promised OS updates5 yearslead4 years
Reader questions

Frequently asked

Which has better battery, OnePlus 15 or OnePlus Open 2?+

OnePlus 15 has 31.6% more battery — 7500 mAh vs 5700 mAh.

Which is lighter, OnePlus 15 or OnePlus Open 2?+

OnePlus 15 is 28g lighter — 211g vs 239g.

Is OnePlus 15 waterproof?+

OnePlus 15 has an IP69 rating.

Does OnePlus Open 2 support 5G?+

Yes, OnePlus Open 2 supports 5G.

Which has a better camera, OnePlus 15 or OnePlus Open 2?+

OnePlus Open 2 has a 50 MP main camera vs 50 MP.

Drill down

Spec-level deep dives

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