Vivo iQOO 15 Ultra vs Vivo Y21d
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo Y21d (2025) runs on the Unisoc T7225; launch prices were $799 and $110. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 38/100 (a 51-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6500); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Vivo Y21d doesn't; the Vivo Y21d is noticeably lighter (209g vs 227g).
Vivo iQOO 15 Ultra
Vivo Y21d
- Better Geekbench Single: 3640 vs 580
- Better Geekbench Multi: 11033 vs 1750
- Bigger battery: 7400 vs 6500 mAh
- Faster charging: 120W vs 44W
- Higher refresh rate: 144Hz vs 90Hz
- Higher performance (99/100 vs 31/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 58/100)
- Better display (99/100 vs 43/100)
- Lighter: 209g vs 227g
- Cheaper at launch: $110 vs $799
- Better portability (49/100 vs 35/100)
Comparing the Vivo iQOO 15 Ultra vs the Vivo Y21d, the Vivo iQOO 15 Ultra scores 51 points higher (89/100 vs 38/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 31/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 58/100). Value score: Vivo iQOO 15 Ultra — 90/100, Vivo Y21d — 60/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (99/100 vs 31/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (99/100 vs 43/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (92/100 vs 58/100). In the "portability" category, the Vivo Y21d is a bit better (49/100 vs 35/100).
| Specification | Vivo iQOO 15 Ultra | Vivo Y21d | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Unisoc T7225 | |
| AnTuTu | 4602290 | — | |
| Geekbench Single | 3640 | 580 | |
| Geekbench Multi | 11033 | 1750 | |
| Display | 6.8" LTPO AMOLED | 6.7" IPS LCD | |
| Resolution | 1440x3168 | 720x1608 | |
| Refresh rate | 144 Hz | 90 Hz | |
| Battery | 7400 mAh | 6500 mAh | |
| Charging | 120W | 44W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 5 MP | |
| RAM | 12GB / 16GB / 24GB | 4GB / 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 8000 nits | 1000 nits | |
| NFC | yes | no | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.7×76.8×8.7 mm | 166.1×77.0×8.4 mm | |
| Weight | 227 g | 209 g | |
| Launch price | $799 | $110 |
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo Y21d
- Main: 50MP f/f/1.8
- Front: 5MP
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo Y21d
- 6.7" IPS LCD
- Resolution: 720x1608
- Refresh rate: 90 Hz
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo Y21d
- 6500 mAh
- Wired: 44W
- No wireless charging
Launch price difference: $689. Vivo Y21d was $689 cheaper at launch.
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (99/100 vs 31/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (99/100 vs 43/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d (92/100 vs 58/100).
portability
In the "portability" category, the Vivo Y21d is a bit better (49/100 vs 35/100).
Which is better: the Vivo iQOO 15 Ultra or the Vivo Y21d?
The Vivo iQOO 15 Ultra significantly outperforms the Vivo Y21d by 51 points (89/100 vs 38/100).
What is the rating of the Vivo iQOO 15 Ultra and the Vivo Y21d?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo Y21d — 38/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo Y21d?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 30/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo Y21d?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 31/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo Y21d?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo Y21d is a better fit for everyday use.