OnePlus 15s vs Vivo S21 Pro
The OnePlus 15s (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo S21 Pro (2024) runs on the MediaTek Dimensity 9300+. By overall MobileRank rating, the OnePlus 15s leads — 83/100 vs 79/100 (a 4-point difference). Key differences: the OnePlus 15s has the bigger battery (7500 mAh vs 5500); the OnePlus 15s is faster in AnTuTu (3,950,082 vs 2,348,248).
Profile comparison
Category scores
OnePlus 15s
Vivo S21 Pro
What makes OnePlus 15s better?
- Higher AnTuTu: 3950082 vs 2348248
- Better Geekbench Single: 3639 vs 2249
- Better Geekbench Multi: 11047 vs 7352
- Bigger battery: 7500 vs 5500 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (98/100 vs 83/100)
- Longer battery life (89/100 vs 64/100)
- Better display (95/100 vs 85/100)
What makes Vivo S21 Pro better?
- Better camera (81/100 vs 53/100)
Comparison verdict
Comparing the OnePlus 15s vs the Vivo S21 Pro, the OnePlus 15s scores 4 points higher (83/100 vs 79/100). In the "performance" category, the OnePlus 15s leads (98/100 vs 83/100). In the "camera" category, the Vivo S21 Pro leads (81/100 vs 53/100). In the "battery" category, the OnePlus 15s leads (89/100 vs 64/100). In the "performance" category, the OnePlus 15s notably outperforms the Vivo S21 Pro (98/100 vs 83/100). In the "display" category, the OnePlus 15s is a bit better (95/100 vs 85/100). In the "camera" category, the Vivo S21 Pro notably outperforms the OnePlus 15s (81/100 vs 53/100). In the "battery" category, the OnePlus 15s notably outperforms the Vivo S21 Pro (89/100 vs 64/100).
Specs comparison
| Specification | OnePlus 15s | Vivo S21 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 9300+ | |
| AnTuTu | 3950082 | 2348248 | |
| Geekbench Single | 3639 | 2249 | |
| Geekbench Multi | 11047 | 7352 | |
| Display | 6.3" AMOLED | 6.7" AMOLED | |
| Resolution | 2640x1216 | 1260x2800 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 7500 mAh | 5500 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 16 MP | 50 MP | |
| RAM | 12GB | 16GB | |
| Storage | 256GB / 512GB | 512GB | |
| OS | Android 16 | Android 15, OriginOS 5 | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Weight | 195 g | — | |
| Launch price | $700 | — |
Camera comparison
OnePlus 15s
- Main: 50MP f/1.8
- Telephoto: 50MP
- Front: 16MP
Vivo S21 Pro
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
OnePlus 15s
- 6.3" AMOLED
- Resolution: 2640x1216
- Refresh rate: 165 Hz
Vivo S21 Pro
- 6.7" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Battery and charging
OnePlus 15s
- 7500 mAh
- Wired: 100W
- Wireless: 50W
Vivo S21 Pro
- 5500 mAh
- Wired: 90W
- No wireless charging
Overall performance score
We compared OnePlus 15s and Vivo S21 Pro, covering their specs and all relevant benchmarks.
OnePlus 15s leads Vivo S21 Pro by 68.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo S21 Pro
Price unknownDetailed category analysis
performance
In the "performance" category, the OnePlus 15s notably outperforms the Vivo S21 Pro (98/100 vs 83/100).
display
In the "display" category, the OnePlus 15s is a bit better (95/100 vs 85/100).
camera
In the "camera" category, the Vivo S21 Pro notably outperforms the OnePlus 15s (81/100 vs 53/100).
battery
In the "battery" category, the OnePlus 15s notably outperforms the Vivo S21 Pro (89/100 vs 64/100).
Frequently asked questions
Which is better: the OnePlus 15s or the Vivo S21 Pro?
The OnePlus 15s edges out the Vivo S21 Pro by just 4 points — the two devices are very close in overall level.
What is the rating of the OnePlus 15s and the Vivo S21 Pro?
The OnePlus 15s has a MobileRank rating of 83/100, the Vivo S21 Pro — 79/100.
Which has the better camera: the OnePlus 15s or the Vivo S21 Pro?
The Vivo S21 Pro leads on camera score (81/100 vs 53/100).
Which is more powerful: the OnePlus 15s or the Vivo S21 Pro?
The OnePlus 15s leads on performance (98/100 vs 83/100).
Should you choose the OnePlus 15s over the Vivo S21 Pro?
The OnePlus 15s is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo S21 Pro is a better fit for gamers and power users, mobile photography enthusiasts.