Who is the OnePlus 15 for?
Strong choice. At 78.4 Mars Score it sits 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 S-tier halo. The day-to-day experience is hard to tell apart 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.
OnePlus 15: advantages & disadvantages
Measured against every smartphones we track, here is where the OnePlus 15 pulls ahead — and where it gives ground.
- ▲Includes Optical image stabilization — a feature not every smartphones offers.
- ▲Includes 5G support — a feature not every smartphones offers.
- ▲Battery capacity: 7500 mAh — among the best smartphones we track.
- ▲AnTuTu: 2950000 — well above the typical smartphones.
- ▼Refresh rate: 120 Hz — below the typical smartphones.
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
The 8 closest matchups in the Smartphones category, sorted by Mars Score proximity — the fights most worth your time.
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Frequently asked
What is the Mars Score for OnePlus 15?+
OnePlus 15 scores 78.4 on the transparent Mars Score formula for smartphones, computed from its published specs against the category's weighted normalization.
What category does OnePlus 15 belong to?+
OnePlus 15 is a OnePlus smartphone catalogued in the Smartphones category.
When was OnePlus 15 released?+
OnePlus 15 was released on 2026-01-15.
What is the screen size of OnePlus 15?+
OnePlus 15 has a screen size of 6.78 ".
What is the ram of OnePlus 15?+
OnePlus 15 has a ram of 16 GB.
What is the pixel density of OnePlus 15?+
OnePlus 15 has a pixel density of 450 ppi.
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