Redmi 4X vs Vivo iQOO 15T
The Redmi 4X (2017) runs on the Qualcomm Snapdragon 435, while the Vivo iQOO 15T (2026) runs on the MediaTek Dimensity 9500; launch prices were $120 and $499. By overall MobileRank rating, the Vivo iQOO 15T leads — 82/100 vs 20/100 (a 62-point difference). Key differences: the Vivo iQOO 15T has the bigger battery (8000 mAh vs 4100); the main camera is 13 MP vs 200 MP; the Vivo iQOO 15T is faster in AnTuTu (3,815,522 vs 150,628); the Vivo iQOO 15T has NFC for contactless payments, the Redmi 4X doesn't; the Redmi 4X is noticeably lighter (150g vs 216g).
Redmi 4X
Vivo iQOO 15T
- Lighter: 150g vs 216g
- Cheaper at launch: $120 vs $499
- Better portability (76/100 vs 44/100)
- Higher AnTuTu: 3815522 vs 150628
- Better Geekbench Single: 3228 vs 141
- Better Geekbench Multi: 9553 vs 618
- Bigger battery: 8000 vs 4100 mAh
- Better main camera: 200MP vs 13MP
- Higher refresh rate: 144Hz vs 60Hz
- Higher performance (95/100 vs 8/100)
- Better camera (65/100 vs 10/100)
- Longer battery life (75/100 vs 35/100)
- Better display (99/100 vs 32/100)
Comparing the Redmi 4X vs the Vivo iQOO 15T, the Vivo iQOO 15T scores 62 points higher (82/100 vs 20/100). In the "performance" category, the Vivo iQOO 15T leads (95/100 vs 8/100). In the "camera" category, the Vivo iQOO 15T leads (65/100 vs 10/100). In the "battery" category, the Vivo iQOO 15T leads (75/100 vs 35/100). Value score: Redmi 4X — 22/100, Vivo iQOO 15T — 90/100; 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 15T significantly outperforms the Redmi 4X (95/100 vs 8/100). In the "display" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (99/100 vs 32/100). In the "camera" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (65/100 vs 10/100). In the "battery" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (75/100 vs 35/100). In the "portability" category, the Redmi 4X significantly outperforms the Vivo iQOO 15T (76/100 vs 44/100).
| Specification | Redmi 4X | Vivo iQOO 15T | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 435 | MediaTek Dimensity 9500 | |
| AnTuTu | 150628 | 3815522 | |
| Geekbench Single | 141 | 3228 | |
| Geekbench Multi | 618 | 9553 | |
| Display | 5.0" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | — | 1440x3168 | |
| Refresh rate | 60 Hz | 144 Hz | |
| Battery | 4100 mAh | 8000 mAh | |
| Charging | — | 100W | |
| Main camera | 13 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Front camera | 5 MP | 16 MP | |
| RAM | 2GB / 3GB | 12GB / 16GB | |
| Storage | 16GB / 32GB | 256GB / 512GB / 1TB | |
| OS | — | Android 16 | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 139.2×70.0×8.7 mm | — | |
| Weight | 150 g | 216 g | |
| Launch price | $120 | $499 |
Redmi 4X
- Main: 13MP
- Front: 5MP
Vivo iQOO 15T
- Main: 200MP f/f/1.8
- Ultrawide: 50MP
- Front: 16MP
Redmi 4X
- 5.0" IPS LCD
- Refresh rate: 60 Hz
Vivo iQOO 15T
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Redmi 4X
- 4100 mAh
- Wireless charging: no data
Vivo iQOO 15T
- 8000 mAh
- Wired: 100W
- No wireless charging
We compared Redmi 4X and Vivo iQOO 15T, covering their specs and all relevant benchmarks.
Vivo iQOO 15T leads Redmi 4X by 96.1% in our overall performance rating.
Launch price difference: $379. Redmi 4X was $379 cheaper at launch.
performance
In the "performance" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (95/100 vs 8/100).
display
In the "display" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (99/100 vs 32/100).
camera
In the "camera" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (65/100 vs 10/100).
battery
In the "battery" category, the Vivo iQOO 15T significantly outperforms the Redmi 4X (75/100 vs 35/100).
portability
In the "portability" category, the Redmi 4X significantly outperforms the Vivo iQOO 15T (76/100 vs 44/100).
Which is better: the Redmi 4X or the Vivo iQOO 15T?
The Vivo iQOO 15T significantly outperforms the Redmi 4X by 62 points (82/100 vs 20/100).
What is the rating of the Redmi 4X and the Vivo iQOO 15T?
The Redmi 4X has a MobileRank rating of 20/100, the Vivo iQOO 15T — 82/100.
Which has the better camera: the Redmi 4X or the Vivo iQOO 15T?
The Vivo iQOO 15T leads on camera score (65/100 vs 10/100).
Which is more powerful: the Redmi 4X or the Vivo iQOO 15T?
The Vivo iQOO 15T leads on performance (95/100 vs 8/100).
Should you choose the Redmi 4X over the Vivo iQOO 15T?
The Redmi 4X is a better fit for everyday use. The Vivo iQOO 15T is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.