Who is the OnePlus 15 for?
Strong choice. At 78.4 Mars Score it's in the A-tier (78-87) — the cluster just below the absolute leaders.
Pick this when you want flagship-tier specs without paying for the headline halo of the S-tier. The day-to-day experience is indistinguishable from the very top.
Mars Score is computed from 23 measured specs against the transparent formula for the smartphones category. No editorial picks, no paid placement.
Pros and cons at a glance
- ▲Optical image stabilization — supported.
- ▲5G support — supported.
- ▲Battery capacity: 7500 mAh.
- ▲AnTuTu: 2950000.
- ▼Refresh rate: 120 Hz (below category average).
Pros are specs scoring ≥75% of the category normalization range. Cons are ≤35%. Derived from the Mars Score formula — no hand-curated lists.
At a glance
- Screen size
- 6.78"
- RAM
- 16GB
- Pixel density
- 450ppi
- Battery capacity
- 7500mAh
All specifications
Design
- Weight
- 211 g
- Thickness
- 8.3 mm
- Form factor
- bar
Display
- Screen size?
- 6.78 "
- Pixel density?
- 450 ppi
- Refresh rate?
- 120 Hz
- Peak brightness?
- 4500 nits
Cameras
- Main camera?
- 50 MP
- Front camera
- 32 MP
Battery
- Battery capacity
- 7500 mAh
- Wired charging?
- 120 W
Connectivity
- 5G support?
- true
- Headphone jack
- false
- microSD slot
- false
Operating System
- OS
- Android
- Promised OS updates
- 5 years
Hands-on coverage
Editorial pieces from the vsMars team that cover the OnePlus 15.
Pixel 10 Pro vs iPhone 17 Pro Max — Night-Mode Shootout
Forty-eight side-by-side exposures from 0.5 lux to 50 lux. The Pixel still wins on detail; the iPhone wins on color truth.
Best Budget Smartphones Under $500 with Great Cameras (2026)
Five phones that punch above their price tier on photo quality — and which compromises each one makes elsewhere.
OnePlus 15 vs iPhone 17 — Sustained CPU Under 20-Minute Load
Both phones can sprint. Only one of them still runs fast at minute 20. Geekbench loop and thermal-camera footage.
Why 7,000 mAh Batteries Are Quietly Changing Smartphones
Silicon-carbon anodes pushed phone batteries past 7,000 mAh in 2026 without making phones thicker. Here's what that actually changes for users — and for how reviewers should score battery.
Why Mars Score Rewards Battery Heavier Than Spec Sheets Do
Battery weight in the smartphone Mars Score formula is 18% — the highest single weight. Here's why that's not arbitrary.
OnePlus 15 — 30-Day Battery Field Test
We ran the OnePlus 15's 7,500 mAh battery through a month of typical use. Here's what 30 days of real-world drain, fast charging, and standby looked like.
Latest from the lab
All lab reports →Popular comparisons featuring the OnePlus 15
Top 8 closest matchups in the Smartphones category. Sorted by Mars Score proximity — these are the fights most worth your time.
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