OnePlus Ace 6 Ultra vs Vivo Y21
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Vivo Y21 (2026) runs on the MediaTek Dimensity 6300; launch prices were $555 and $178. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 44/100 (a 30-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 6500); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 524,785).
OnePlus Ace 6 Ultra
Vivo Y21
- Higher AnTuTu: 3429868 vs 524785
- Better Geekbench Single: 3228 vs 771
- Better Geekbench Multi: 9553 vs 1980
- Bigger battery: 8600 vs 6500 mAh
- Faster charging: 120W vs 44W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (93/100 vs 43/100)
- Better camera (35/100 vs 30/100)
- Longer battery life (82/100 vs 58/100)
- Better display (94/100 vs 55/100)
- Higher value score: 66/100 vs 56/100
- Lighter: 209g vs 217g
- Cheaper at launch: $178 vs $555
- Better portability (49/100 vs 43/100)
Comparing the OnePlus Ace 6 Ultra vs the Vivo Y21, the OnePlus Ace 6 Ultra scores 30 points higher (74/100 vs 44/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (93/100 vs 43/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 58/100). In the "value for money" category, the OnePlus Ace 6 Ultra leads (66/100 vs 56/100). In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Vivo Y21 (93/100 vs 43/100). In the "display" category, the OnePlus Ace 6 Ultra significantly outperforms the Vivo Y21 (94/100 vs 55/100). In the "camera" category, the OnePlus Ace 6 Ultra is a bit better (35/100 vs 30/100). In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Vivo Y21 (82/100 vs 58/100). In the "portability" category, the Vivo Y21 is a bit better (49/100 vs 43/100). In the "value for money" category, the OnePlus Ace 6 Ultra is a bit better (66/100 vs 56/100).
| Specification | OnePlus Ace 6 Ultra | Vivo Y21 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | MediaTek Dimensity 6300 | |
| AnTuTu | 3429868 | 524785 | |
| Geekbench Single | 3228 | 771 | |
| Geekbench Multi | 9553 | 1980 | |
| Display | 6.8" AMOLED | 6.7" IPS LCD | |
| Resolution | 1272x2772 | 720x1600 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 6500 mAh | |
| Charging | 120W | 44W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 16 MP | 5 MP | |
| RAM | 12GB / 16GB | 4GB / 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB | |
| OS | Android 16 | Android 16, OriginOS 6 | |
| Brightness (peak) | 1800 nits | 1200 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP65 | |
| Dimensions | 162.5×77.5×8.5 mm | 167.4×77.1×8.4 mm | |
| Weight | 217 g | 209 g | |
| Launch price | $555 | $178 |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo Y21
- Main: 50MP f/f/1.8
- Front: 5MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Vivo Y21
- 6.7" IPS LCD
- Resolution: 720x1600
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Vivo Y21
- 6500 mAh
- Wired: 44W
- No wireless charging
We compared OnePlus Ace 6 Ultra and Vivo Y21, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Vivo Y21 by 553.6% in our overall performance rating.
Launch price difference: $377. Vivo Y21 was $377 cheaper at launch.
performance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Vivo Y21 (93/100 vs 43/100).
display
In the "display" category, the OnePlus Ace 6 Ultra significantly outperforms the Vivo Y21 (94/100 vs 55/100).
camera
In the "camera" category, the OnePlus Ace 6 Ultra is a bit better (35/100 vs 30/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Vivo Y21 (82/100 vs 58/100).
portability
In the "portability" category, the Vivo Y21 is a bit better (49/100 vs 43/100).
value for money
In the "value for money" category, the OnePlus Ace 6 Ultra is a bit better (66/100 vs 56/100).
Which is better: the OnePlus Ace 6 Ultra or the Vivo Y21?
The OnePlus Ace 6 Ultra significantly outperforms the Vivo Y21 by 30 points (74/100 vs 44/100).
What is the rating of the OnePlus Ace 6 Ultra and the Vivo Y21?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Vivo Y21 — 44/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Vivo Y21?
The OnePlus Ace 6 Ultra leads on camera score (35/100 vs 30/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Vivo Y21?
The OnePlus Ace 6 Ultra leads on performance (93/100 vs 43/100).
Should you choose the OnePlus Ace 6 Ultra over the Vivo Y21?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo Y21 is a better fit for everyday use.