Vivo iQOO 15T vs Vivo Y400 4G
The Vivo iQOO 15T (2026) runs on the MediaTek Dimensity 9500, while the Vivo Y400 4G (2025) runs on the Qualcomm Snapdragon 685. By overall MobileRank rating, the Vivo iQOO 15T leads — 82/100 vs 44/100 (a 38-point difference). Key differences: the Vivo iQOO 15T has the bigger battery (8000 mAh vs 6000); the main camera is 200 MP vs 50 MP; the Vivo iQOO 15T is faster in AnTuTu (3,815,522 vs 467,392); the Vivo Y400 4G is noticeably lighter (196g vs 216g).
Vivo iQOO 15T
Vivo Y400 4G
- Higher AnTuTu: 3815522 vs 467392
- Better Geekbench Single: 3228 vs 466
- Better Geekbench Multi: 9553 vs 1396
- Bigger battery: 8000 vs 6000 mAh
- Faster charging: 100W vs 44W
- Better main camera: 200MP vs 50MP
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (95/100 vs 33/100)
- Better camera (65/100 vs 30/100)
- Longer battery life (75/100 vs 56/100)
- Better display (99/100 vs 79/100)
- Lighter: 196g vs 216g
- Better portability (63/100 vs 44/100)
Comparing the Vivo iQOO 15T vs the Vivo Y400 4G, the Vivo iQOO 15T scores 38 points higher (82/100 vs 44/100). In the "performance" category, the Vivo iQOO 15T leads (95/100 vs 33/100). In the "camera" category, the Vivo iQOO 15T leads (65/100 vs 30/100). In the "battery" category, the Vivo iQOO 15T leads (75/100 vs 56/100). In the "performance" category, the Vivo iQOO 15T significantly outperforms the Vivo Y400 4G (95/100 vs 33/100). In the "display" category, the Vivo iQOO 15T notably outperforms the Vivo Y400 4G (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15T significantly outperforms the Vivo Y400 4G (65/100 vs 30/100). In the "battery" category, the Vivo iQOO 15T notably outperforms the Vivo Y400 4G (75/100 vs 56/100). In the "portability" category, the Vivo Y400 4G notably outperforms the Vivo iQOO 15T (63/100 vs 44/100).
| Specification | Vivo iQOO 15T | Vivo Y400 4G | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 685 | |
| AnTuTu | 3815522 | 467392 | |
| Geekbench Single | 3228 | 466 | |
| Geekbench Multi | 9553 | 1396 | |
| Display | 6.8" LTPO AMOLED | 6.7" AMOLED | |
| Resolution | 1440x3168 | 1080x2400 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 8000 mAh | 6000 mAh | |
| Charging | 100W | 44W | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Front camera | 16 MP | 8 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 15, Funtouch 15 | |
| Brightness (peak) | — | 1800 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | — | 162.3×75.3×7.9 mm | |
| Weight | 216 g | 196 g | |
| Price | $499 | — |
Vivo iQOO 15T
- Main: 200MP f/f/1.8
- Ultrawide: 50MP
- Front: 16MP
Vivo Y400 4G
- Main: 50MP f/f/1.8
- Front: 8MP
Vivo iQOO 15T
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo Y400 4G
- 6.7" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo iQOO 15T
- 8000 mAh
- Wired: 100W
- No wireless charging
Vivo Y400 4G
- 6000 mAh
- Wired: 44W
- No wireless charging
We compared Vivo iQOO 15T and Vivo Y400 4G, covering their specs and all relevant benchmarks.
Vivo iQOO 15T leads Vivo Y400 4G by 716.3% in our overall performance rating.
Vivo Y400 4G
Price unknownperformance
In the "performance" category, the Vivo iQOO 15T significantly outperforms the Vivo Y400 4G (95/100 vs 33/100).
display
In the "display" category, the Vivo iQOO 15T notably outperforms the Vivo Y400 4G (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15T significantly outperforms the Vivo Y400 4G (65/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15T notably outperforms the Vivo Y400 4G (75/100 vs 56/100).
portability
In the "portability" category, the Vivo Y400 4G notably outperforms the Vivo iQOO 15T (63/100 vs 44/100).
Which is better: the Vivo iQOO 15T or the Vivo Y400 4G?
The Vivo iQOO 15T significantly outperforms the Vivo Y400 4G by 38 points (82/100 vs 44/100).
What is the rating of the Vivo iQOO 15T and the Vivo Y400 4G?
The Vivo iQOO 15T has a MobileRank rating of 82/100, the Vivo Y400 4G — 44/100.
Which has the better camera: the Vivo iQOO 15T or the Vivo Y400 4G?
The Vivo iQOO 15T leads on camera score (65/100 vs 30/100).
Which is more powerful: the Vivo iQOO 15T or the Vivo Y400 4G?
The Vivo iQOO 15T leads on performance (95/100 vs 33/100).
Should you choose the Vivo iQOO 15T over the Vivo Y400 4G?
The Vivo iQOO 15T is a better fit for gamers and power users, those who care about battery life. The Vivo Y400 4G is a better fit for everyday use.