Redmi K20 vs Vivo iQOO 15 Ultra
The Redmi K20 (2019) runs on the Qualcomm Snapdragon 730, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $250 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 41/100 (a 48-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 4000); the main camera is 48 MP vs 50 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 502,844); the Redmi K20 is noticeably lighter (191g vs 227g).
Profile comparison
Category scores
Redmi K20
Vivo iQOO 15 Ultra
What makes Redmi K20 better?
- Lighter: 191g vs 227g
- Cheaper at launch: $250 vs $799
- Better portability (56/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 502844
- Better Geekbench Single: 3639 vs 724
- Better Geekbench Multi: 11047 vs 1836
- Bigger battery: 7400 vs 4000 mAh
- Faster charging: 120W vs 18W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 144Hz vs 60Hz
- Higher performance (99/100 vs 41/100)
- Better camera (78/100 vs 41/100)
- Longer battery life (92/100 vs 27/100)
- Better display (99/100 vs 56/100)
Comparison verdict
Comparing the Redmi K20 vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 48 points higher (89/100 vs 41/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 41/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 41/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 27/100). Value score: Redmi K20 — 32/100, Vivo iQOO 15 Ultra — 92/100; 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 Redmi K20 (99/100 vs 41/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (99/100 vs 56/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (78/100 vs 41/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (92/100 vs 27/100). In the "portability" category, the Redmi K20 notably outperforms the Vivo iQOO 15 Ultra (56/100 vs 35/100).
Specs comparison
| Specification | Redmi K20 | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 730 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 502844 | 4602290 | |
| Geekbench Single | 724 | 3639 | |
| Geekbench Multi | 1836 | 11047 | |
| Display | 6.4" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 2340x1080 | 1440x3168 | |
| Refresh rate | 60 Hz | 144 Hz | |
| Battery | 4000 mAh | 7400 mAh | |
| Charging | 18W | 120W | |
| Wireless charging | — | 50W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 8 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB / 24GB | |
| Storage | 64GB / 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 9 | Android 16 | |
| Brightness (peak) | — | 8000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 156.7×74.3×8.8 mm | 163.7×76.8×8.7 mm | |
| Weight | 191 g | 227 g | |
| Launch price | $250 | $799 |
Camera comparison
Redmi K20
- Main: 48MP f/1.75
- Ultrawide: 13MP
- Telephoto: 8MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K20
- 6.4" AMOLED
- Resolution: 2340x1080
- Refresh rate: 60 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Redmi K20
- 4000 mAh
- Wired: 18W
- Wireless charging: no data
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Redmi K20 and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Redmi K20 by 89.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $549. Redmi K20 was $549 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (99/100 vs 41/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (99/100 vs 56/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (78/100 vs 41/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 (92/100 vs 27/100).
portability
In the "portability" category, the Redmi K20 notably outperforms the Vivo iQOO 15 Ultra (56/100 vs 35/100).
Frequently asked questions
Which is better: the Redmi K20 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Redmi K20 by 48 points (89/100 vs 41/100).
What is the rating of the Redmi K20 and the Vivo iQOO 15 Ultra?
The Redmi K20 has a MobileRank rating of 41/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Redmi K20 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 41/100).
Which is more powerful: the Redmi K20 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 41/100).
Should you choose the Redmi K20 over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.