OnePlus Ace 6 vs Samsung Galaxy S21+
The OnePlus Ace 6 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S21+ (2021) runs on the Samsung Exynos 2100; launch prices were $399 and $999. By overall MobileRank rating, the OnePlus Ace 6 leads — 74/100 vs 57/100 (a 17-point difference). Key differences: the OnePlus Ace 6 has the bigger battery (7800 mAh vs 4800); the main camera is 50 MP vs 12 MP; the OnePlus Ace 6 is faster in AnTuTu (3,391,399 vs 1,017,773).
OnePlus Ace 6
Samsung Galaxy S21+
- Higher AnTuTu: 3391399 vs 1017773
- Better Geekbench Single: 3041 vs 1435
- Better Geekbench Multi: 9494 vs 3555
- Bigger battery: 7800 vs 4800 mAh
- Faster charging: 120W vs 25W
- Better main camera: 50MP vs 12MP
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $399 vs $999
- Higher performance (93/100 vs 62/100)
- Longer battery life (79/100 vs 48/100)
- Better display (94/100 vs 79/100)
- Lighter: 200g vs 213g
- Better camera (42/100 vs 35/100)
- Better portability (60/100 vs 48/100)
Comparing the OnePlus Ace 6 vs the Samsung Galaxy S21+, the OnePlus Ace 6 scores 17 points higher (74/100 vs 57/100). In the "performance" category, the OnePlus Ace 6 leads (93/100 vs 62/100). In the "battery" category, the OnePlus Ace 6 leads (79/100 vs 48/100). Value score: OnePlus Ace 6 — 86/100, Samsung Galaxy S21+ — 26/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the OnePlus Ace 6 significantly outperforms the Samsung Galaxy S21+ (93/100 vs 62/100). In the "display" category, the OnePlus Ace 6 notably outperforms the Samsung Galaxy S21+ (94/100 vs 79/100). In the "camera" category, the Samsung Galaxy S21+ is a bit better (42/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 significantly outperforms the Samsung Galaxy S21+ (79/100 vs 48/100). In the "portability" category, the Samsung Galaxy S21+ is a bit better (60/100 vs 48/100).
| Specification | OnePlus Ace 6 | Samsung Galaxy S21+ | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Samsung Exynos 2100 | |
| AnTuTu | 3391399 | 1017773 | |
| Geekbench Single | 3041 | 1435 | |
| Geekbench Multi | 9494 | 3555 | |
| Display | 6.8" OLED | 6.7" Dynamic AMOLED 2X | |
| Resolution | 2800x1272 | 2400x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 7800 mAh | 4800 mAh | |
| Charging | 120W | 25W | |
| Wireless charging | 0W | 15W | |
| Main camera | 50 MP | 12 MP | |
| Ultrawide | 8 MP | 12 MP | |
| Telephoto | 0 MP | 64 MP | |
| Front camera | 16 MP | 10 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 15 | Android 11 | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | — | |
| Protection | IP68 | — | |
| Dimensions | 163.4×77.0×8.3 mm | — | |
| Weight | 213 g | 200 g | |
| Launch price | $399 | $999 |
OnePlus Ace 6
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Samsung Galaxy S21+
- Main: 12MP f/1.8
- Ultrawide: 12MP
- Telephoto: 64MP
- Front: 10MP
OnePlus Ace 6
- 6.8" OLED
- Resolution: 2800x1272
- Refresh rate: 165 Hz
Samsung Galaxy S21+
- 6.7" Dynamic AMOLED 2X
- Resolution: 2400x1080
- Refresh rate: 120 Hz
OnePlus Ace 6
- 7800 mAh
- Wired: 120W
- No wireless charging
Samsung Galaxy S21+
- 4800 mAh
- Wired: 25W
- Wireless: 15W
We compared OnePlus Ace 6 and Samsung Galaxy S21+, covering their specs and all relevant benchmarks.
OnePlus Ace 6 leads Samsung Galaxy S21+ by 233.2% in our overall performance rating.
Launch price difference: $600. OnePlus Ace 6 was $600 cheaper at launch.
performance
In the "performance" category, the OnePlus Ace 6 significantly outperforms the Samsung Galaxy S21+ (93/100 vs 62/100).
display
In the "display" category, the OnePlus Ace 6 notably outperforms the Samsung Galaxy S21+ (94/100 vs 79/100).
camera
In the "camera" category, the Samsung Galaxy S21+ is a bit better (42/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 significantly outperforms the Samsung Galaxy S21+ (79/100 vs 48/100).
portability
In the "portability" category, the Samsung Galaxy S21+ is a bit better (60/100 vs 48/100).
Which is better: the OnePlus Ace 6 or the Samsung Galaxy S21+?
The OnePlus Ace 6 is noticeably better than the Samsung Galaxy S21+ — the overall rating gap is 17 points.
What is the rating of the OnePlus Ace 6 and the Samsung Galaxy S21+?
The OnePlus Ace 6 has a MobileRank rating of 74/100, the Samsung Galaxy S21+ — 57/100.
Which has the better camera: the OnePlus Ace 6 or the Samsung Galaxy S21+?
The Samsung Galaxy S21+ leads on camera score (42/100 vs 35/100).
Which is more powerful: the OnePlus Ace 6 or the Samsung Galaxy S21+?
The OnePlus Ace 6 leads on performance (93/100 vs 62/100).
Should you choose the OnePlus Ace 6 over the Samsung Galaxy S21+?
The OnePlus Ace 6 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.