Vivo iQOO 15 vs Vivo Y21d
The Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y21d (2025) runs on the Unisoc T7225; launch prices were $599 and $110. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 38/100 (a 48-point difference). Key differences: the Vivo iQOO 15 has the bigger battery (7000 mAh vs 6500); the Vivo iQOO 15 has NFC for contactless payments, the Vivo Y21d doesn't.
Vivo iQOO 15
Vivo Y21d
- Better Geekbench Single: 3041 vs 580
- Better Geekbench Multi: 9494 vs 1750
- Bigger battery: 7000 vs 6500 mAh
- Faster charging: 100W vs 44W
- Higher refresh rate: 144Hz vs 90Hz
- Higher performance (94/100 vs 31/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (85/100 vs 58/100)
- Better display (99/100 vs 43/100)
- Lighter: 209g vs 215g
- Cheaper at launch: $110 vs $599
- Better portability (49/100 vs 48/100)
Comparing the Vivo iQOO 15 vs the Vivo Y21d, the Vivo iQOO 15 scores 48 points higher (86/100 vs 38/100). In the "performance" category, the Vivo iQOO 15 leads (94/100 vs 31/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 58/100). Value score: Vivo iQOO 15 — 84/100, 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 significantly outperforms the Vivo Y21d (94/100 vs 31/100). In the "display" category, the Vivo iQOO 15 significantly outperforms the Vivo Y21d (99/100 vs 43/100). In the "camera" category, the Vivo iQOO 15 significantly outperforms the Vivo Y21d (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 notably outperforms the Vivo Y21d (85/100 vs 58/100). In the "portability" category, the Vivo Y21d and the Vivo iQOO 15 are nearly equal (49/100 vs 48/100).
| Specification | Vivo iQOO 15 | Vivo Y21d | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Unisoc T7225 | |
| AnTuTu | 3740528 | — | |
| Geekbench Single | 3041 | 580 | |
| Geekbench Multi | 9494 | 1750 | |
| Display | 6.8" LTPO AMOLED | 6.7" IPS LCD | |
| Resolution | 1440x3168 | 720x1608 | |
| Refresh rate | 144 Hz | 90 Hz | |
| Battery | 7000 mAh | 6500 mAh | |
| Charging | 100W | 44W | |
| Wireless charging | 40W | 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 | 4GB / 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 6000 nits | 1000 nits | |
| NFC | yes | no | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.7×76.8×8.1 mm | 166.1×77.0×8.4 mm | |
| Weight | 215 g | 209 g | |
| Launch price | $599 | $110 |
Vivo iQOO 15
- 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
- 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
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
Vivo Y21d
- 6500 mAh
- Wired: 44W
- No wireless charging
Launch price difference: $489. Vivo Y21d was $489 cheaper at launch.
performance
In the "performance" category, the Vivo iQOO 15 significantly outperforms the Vivo Y21d (94/100 vs 31/100).
display
In the "display" category, the Vivo iQOO 15 significantly outperforms the Vivo Y21d (99/100 vs 43/100).
camera
In the "camera" category, the Vivo iQOO 15 significantly outperforms the Vivo Y21d (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 notably outperforms the Vivo Y21d (85/100 vs 58/100).
portability
In the "portability" category, the Vivo Y21d and the Vivo iQOO 15 are nearly equal (49/100 vs 48/100).
Which is better: the Vivo iQOO 15 or the Vivo Y21d?
The Vivo iQOO 15 significantly outperforms the Vivo Y21d by 48 points (86/100 vs 38/100).
What is the rating of the Vivo iQOO 15 and the Vivo Y21d?
The Vivo iQOO 15 has a MobileRank rating of 86/100, the Vivo Y21d — 38/100.
Which has the better camera: the Vivo iQOO 15 or the Vivo Y21d?
The Vivo iQOO 15 leads on camera score (78/100 vs 30/100).
Which is more powerful: the Vivo iQOO 15 or the Vivo Y21d?
The Vivo iQOO 15 leads on performance (94/100 vs 31/100).
Should you choose the Vivo iQOO 15 over the Vivo Y21d?
The Vivo iQOO 15 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.