OnePlus 15s vs Samsung Galaxy S21+
The OnePlus 15s (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Samsung Galaxy S21+ (2021) runs on the Samsung Exynos 2100; launch prices were $700 and $999. By overall MobileRank rating, the OnePlus 15s leads — 83/100 vs 57/100 (a 26-point difference). Key differences: the OnePlus 15s has the bigger battery (7500 mAh vs 4800); the main camera is 50 MP vs 12 MP; the OnePlus 15s is faster in AnTuTu (3,942,923 vs 1,017,773).
OnePlus 15s
Samsung Galaxy S21+
- Higher AnTuTu: 3942923 vs 1017773
- Better Geekbench Single: 3640 vs 1435
- Better Geekbench Multi: 11033 vs 3555
- Bigger battery: 7500 vs 4800 mAh
- Faster charging: 100W vs 25W
- Better main camera: 50MP vs 12MP
- Higher refresh rate: 165Hz vs 120Hz
- Faster wireless charging: 50W vs 15W
- Lighter: 195g vs 200g
- Cheaper at launch: $700 vs $999
- Higher performance (98/100 vs 62/100)
- Better camera (53/100 vs 42/100)
- Longer battery life (89/100 vs 48/100)
- Better display (95/100 vs 79/100)
- Better portability (64/100 vs 60/100)
- Better value for money (78/100 vs 26/100)
- Overall rating 57/100
Comparing the OnePlus 15s vs the Samsung Galaxy S21+, the OnePlus 15s scores 26 points higher (83/100 vs 57/100). In the "performance" category, the OnePlus 15s leads (98/100 vs 62/100). In the "camera" category, the OnePlus 15s leads (53/100 vs 42/100). In the "battery" category, the OnePlus 15s leads (89/100 vs 48/100). In the "value for money" category, the OnePlus 15s leads (78/100 vs 26/100). In the "performance" category, the OnePlus 15s significantly outperforms the Samsung Galaxy S21+ (98/100 vs 62/100). In the "display" category, the OnePlus 15s notably outperforms the Samsung Galaxy S21+ (95/100 vs 79/100). In the "camera" category, the OnePlus 15s is a bit better (53/100 vs 42/100). In the "battery" category, the OnePlus 15s significantly outperforms the Samsung Galaxy S21+ (89/100 vs 48/100). In the "portability" category, the OnePlus 15s and the Samsung Galaxy S21+ are nearly equal (64/100 vs 60/100). In the "value for money" category, the OnePlus 15s significantly outperforms the Samsung Galaxy S21+ (78/100 vs 26/100).
| Specification | OnePlus 15s | Samsung Galaxy S21+ | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Samsung Exynos 2100 | |
| AnTuTu | 3942923 | 1017773 | |
| Geekbench Single | 3640 | 1435 | |
| Geekbench Multi | 11033 | 3555 | |
| Display | 6.3" AMOLED | 6.7" Dynamic AMOLED 2X | |
| Resolution | 2640x1216 | 2400x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 7500 mAh | 4800 mAh | |
| Charging | 100W | 25W | |
| Wireless charging | 50W | 15W | |
| Main camera | 50 MP | 12 MP | |
| Ultrawide | 0 MP | 12 MP | |
| Telephoto | 50 MP | 64 MP | |
| Front camera | 16 MP | 10 MP | |
| RAM | 12GB | 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 11 | |
| Weight | 195 g | 200 g | |
| Launch price | $700 | $999 |
OnePlus 15s
- Main: 50MP f/f/1.8
- Telephoto: 50MP
- Front: 16MP
Samsung Galaxy S21+
- Main: 12MP f/1.8
- Ultrawide: 12MP
- Telephoto: 64MP
- Front: 10MP
OnePlus 15s
- 6.3" AMOLED
- Resolution: 2640x1216
- Refresh rate: 165 Hz
Samsung Galaxy S21+
- 6.7" Dynamic AMOLED 2X
- Resolution: 2400x1080
- Refresh rate: 120 Hz
OnePlus 15s
- 7500 mAh
- Wired: 100W
- Wireless: 50W
Samsung Galaxy S21+
- 4800 mAh
- Wired: 25W
- Wireless: 15W
We compared OnePlus 15s and Samsung Galaxy S21+, covering their specs and all relevant benchmarks.
OnePlus 15s leads Samsung Galaxy S21+ by 287.4% in our overall performance rating.
Launch price difference: $299. OnePlus 15s was $299 cheaper at launch.
performance
In the "performance" category, the OnePlus 15s significantly outperforms the Samsung Galaxy S21+ (98/100 vs 62/100).
display
In the "display" category, the OnePlus 15s notably outperforms the Samsung Galaxy S21+ (95/100 vs 79/100).
camera
In the "camera" category, the OnePlus 15s is a bit better (53/100 vs 42/100).
battery
In the "battery" category, the OnePlus 15s significantly outperforms the Samsung Galaxy S21+ (89/100 vs 48/100).
portability
In the "portability" category, the OnePlus 15s and the Samsung Galaxy S21+ are nearly equal (64/100 vs 60/100).
value for money
In the "value for money" category, the OnePlus 15s significantly outperforms the Samsung Galaxy S21+ (78/100 vs 26/100).
Which is better: the OnePlus 15s or the Samsung Galaxy S21+?
The OnePlus 15s significantly outperforms the Samsung Galaxy S21+ by 26 points (83/100 vs 57/100).
What is the rating of the OnePlus 15s and the Samsung Galaxy S21+?
The OnePlus 15s has a MobileRank rating of 83/100, the Samsung Galaxy S21+ — 57/100.
Which has the better camera: the OnePlus 15s or the Samsung Galaxy S21+?
The OnePlus 15s leads on camera score (53/100 vs 42/100).
Which is more powerful: the OnePlus 15s or the Samsung Galaxy S21+?
The OnePlus 15s leads on performance (98/100 vs 62/100).
Should you choose the OnePlus 15s over the Samsung Galaxy S21+?
The OnePlus 15s is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Samsung Galaxy S21+ is a better fit for active users.