Redmi K90 vs Vivo iQOO 15
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $401 and $599. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 76/100 (a 10-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 7000); the Vivo iQOO 15 is faster in AnTuTu (3,758,268 vs 3,077,585).
Profile comparison
Category scores
Redmi K90
Vivo iQOO 15
What makes Redmi K90 better?
- Bigger battery: 7100 vs 7000 mAh
- Lighter: 206g vs 215g
- Cheaper at launch: $401 vs $599
- Better portability (55/100 vs 48/100)
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3758268 vs 3077585
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (94/100 vs 91/100)
- Better camera (78/100 vs 58/100)
- Longer battery life (85/100 vs 72/100)
- Better display (99/100 vs 82/100)
Comparison verdict
Comparing the Redmi K90 vs the Vivo iQOO 15, the Vivo iQOO 15 scores 10 points higher (86/100 vs 76/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 58/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 72/100). Value score: Redmi K90 — 80/100, Vivo iQOO 15 — 86/100; 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 and the Redmi K90 are nearly equal (94/100 vs 91/100). In the "display" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (99/100 vs 82/100). In the "camera" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (78/100 vs 58/100). In the "battery" category, the Vivo iQOO 15 is a bit better (85/100 vs 72/100). In the "portability" category, the Redmi K90 is a bit better (55/100 vs 48/100).
Specs comparison
| Specification | Redmi K90 | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3077585 | 3758268 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.6" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 2510x1156 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 7100 mAh | 7000 mAh | |
| Charging | 100W | 100W | |
| Wireless charging | 0W | 40W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 6000 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 157.5×75.3×8.0 mm | 163.7×76.8×8.1 mm | |
| Weight | 206 g | 215 g | |
| Launch price | $401 | $599 |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Redmi K90 and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads Redmi K90 by 18.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $198. Redmi K90 was $198 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 and the Redmi K90 are nearly equal (94/100 vs 91/100).
display
In the "display" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (99/100 vs 82/100).
camera
In the "camera" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (78/100 vs 58/100).
battery
In the "battery" category, the Vivo iQOO 15 is a bit better (85/100 vs 72/100).
portability
In the "portability" category, the Redmi K90 is a bit better (55/100 vs 48/100).
Frequently asked questions
Which is better: the Redmi K90 or the Vivo iQOO 15?
The Vivo iQOO 15 is noticeably better than the Redmi K90 — the overall rating gap is 10 points.
What is the rating of the Redmi K90 and the Vivo iQOO 15?
The Redmi K90 has a MobileRank rating of 76/100, the Vivo iQOO 15 — 86/100.
Which has the better camera: the Redmi K90 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (78/100 vs 58/100).
Should you choose the Redmi K90 over the Vivo iQOO 15?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.