Vivo iQOO 15 Ultra vs Vivo Y400 4G
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo Y400 4G (2025) runs on the Qualcomm Snapdragon 685; launch prices were $799 and $200. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 44/100 (a 45-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6000); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 476,175); the Vivo Y400 4G is noticeably lighter (197g vs 227g).
Profile comparison
Category scores
Vivo iQOO 15 Ultra
Vivo Y400 4G
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 476175
- Better Geekbench Single: 3639 vs 466
- Better Geekbench Multi: 11047 vs 1396
- Bigger battery: 7400 vs 6000 mAh
- Faster charging: 120W vs 44W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 34/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 56/100)
- Better display (99/100 vs 79/100)
What makes Vivo Y400 4G better?
- Lighter: 197g vs 227g
- Cheaper at launch: $200 vs $799
- Better portability (62/100 vs 35/100)
Comparison verdict
Comparing the Vivo iQOO 15 Ultra vs the Vivo Y400 4G, the Vivo iQOO 15 Ultra scores 45 points higher (89/100 vs 44/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 34/100). 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 56/100). Value score: Vivo iQOO 15 Ultra — 92/100, Vivo Y400 4G — 48/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G (99/100 vs 34/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y400 4G (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G (92/100 vs 56/100). In the "portability" category, the Vivo Y400 4G notably outperforms the Vivo iQOO 15 Ultra (62/100 vs 35/100).
Specs comparison
| Specification | Vivo iQOO 15 Ultra | Vivo Y400 4G | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 685 | |
| AnTuTu | 4602290 | 476175 | |
| Geekbench Single | 3639 | 466 | |
| Geekbench Multi | 11047 | 1396 | |
| Display | 6.8" LTPO AMOLED | 6.7" AMOLED | |
| Resolution | 1440x3168 | 1080x2400 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7400 mAh | 6000 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 | 8 MP | |
| RAM | 12GB / 16GB / 24GB | 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 8000 nits | 1800 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP69 | |
| Dimensions | 163.7×76.8×8.7 mm | 162.3×75.3×7.9 mm | |
| Weight | 227 g | 197 g | |
| Launch price | $799 | $200 |
Camera comparison
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo Y400 4G
- Main: 50MP f/1.8
- Front: 8MP
Display comparison
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo Y400 4G
- 6.7" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Battery and charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo Y400 4G
- 6000 mAh
- Wired: 44W
- No wireless charging
Overall performance score
We compared Vivo iQOO 15 Ultra and Vivo Y400 4G, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo Y400 4G by 866.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $599. Vivo Y400 4G was $599 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G (99/100 vs 34/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y400 4G (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G (92/100 vs 56/100).
portability
In the "portability" category, the Vivo Y400 4G notably outperforms the Vivo iQOO 15 Ultra (62/100 vs 35/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 Ultra or the Vivo Y400 4G?
The Vivo iQOO 15 Ultra significantly outperforms the Vivo Y400 4G by 45 points (89/100 vs 44/100).
What is the rating of the Vivo iQOO 15 Ultra and the Vivo Y400 4G?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo Y400 4G — 44/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo Y400 4G?
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 Y400 4G?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 34/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo Y400 4G?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.