ASUS ROG Phone 9 vs Realme V21
Comparing the ASUS ROG Phone 9 (2025) and the Realme V21 (2022) on specs and benchmarks. By overall MobileRank rating, the ASUS ROG Phone 9 leads — 60/100 vs 10/100 (a 50-point difference). Key differences: the ASUS ROG Phone 9 has the bigger battery (5800 mAh vs 5000); the main camera is 50 MP vs 13 MP; the ASUS ROG Phone 9 has NFC for contactless payments, the Realme V21 doesn't.
ASUS ROG Phone 9
Realme V21
- Bigger battery: 5800 vs 5000 mAh
- Better main camera: 50MP vs 13MP
- Higher performance (72/100 vs 0/100)
- Better camera (39/100 vs 0/100)
- Longer battery life (58/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Better design/ergonomics (50/100 vs 16/100)
- Better value for money (55/100 vs 41/100)
Comparing the ASUS ROG Phone 9 vs the Realme V21, the ASUS ROG Phone 9 scores 50 points higher (60/100 vs 10/100). In the "performance" category, the ASUS ROG Phone 9 leads (72/100 vs 0/100). In the "camera" category, the ASUS ROG Phone 9 leads (39/100 vs 0/100). In the "battery" category, the ASUS ROG Phone 9 leads (58/100 vs 36/100). In the "value for money" category, the Realme V21 leads (55/100 vs 41/100). In the "performance" category, the ASUS ROG Phone 9 significantly outperforms the Realme V21 (72/100 vs 0/100). In the "display" category, the ASUS ROG Phone 9 significantly outperforms the Realme V21 (100/100 vs 0/100). In the "camera" category, the ASUS ROG Phone 9 significantly outperforms the Realme V21 (39/100 vs 0/100). In the "battery" category, the ASUS ROG Phone 9 notably outperforms the Realme V21 (58/100 vs 36/100). In the "design" category, the Realme V21 significantly outperforms the ASUS ROG Phone 9 (50/100 vs 16/100). In the "value for money" category, the Realme V21 is a bit better (55/100 vs 41/100).
| Specification | ASUS ROG Phone 9 | Realme V21 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | — | |
| AnTuTu | 3136217 | — | |
| Geekbench Single | 3100 | — | |
| Geekbench Multi | 9900 | — | |
| Display | 6.8" LTPO AMOLED | 6.6" TFT | |
| Resolution | 2400x1080 | 720x1612 | |
| Refresh rate | 185 Hz | — | |
| Battery | 5800 mAh | 5000 mAh | |
| Charging | 65W | — | |
| Wireless charging | 15W | 0W | |
| Main camera | 50 MP | 13 MP | |
| Ultrawide | 13 MP | 0 MP | |
| Front camera | 32 MP | 8 MP | |
| RAM | 12GB / 16GB / 24GB | 4GB / 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB | |
| OS | Android 15 / ROG UI | Android 12, Realme UI 3.0 | |
| Brightness (peak) | 2500 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 163.8×76.8×8.9 mm | — | |
| Weight | 227 g | — | |
| Price | $999 | — |
ASUS ROG Phone 9
- Main: 50MP f/f/1.9
- Ultrawide: 13MP
- Front: 32MP
Realme V21
- Main: 13MP f/f/2.2
- Front: 8MP
ASUS ROG Phone 9
- 6.8" LTPO AMOLED
- Resolution: 2400x1080
- Refresh rate: 185 Hz
Realme V21
- 6.6" TFT
- Resolution: 720x1612
- Refresh rate: —
ASUS ROG Phone 9
- 5800 mAh
- Wired: 65W
- Wireless: 15W
Realme V21
- 5000 mAh
- No wireless charging
Realme V21
Price unknownperformance
In the "performance" category, the ASUS ROG Phone 9 significantly outperforms the Realme V21 (72/100 vs 0/100).
display
In the "display" category, the ASUS ROG Phone 9 significantly outperforms the Realme V21 (100/100 vs 0/100).
camera
In the "camera" category, the ASUS ROG Phone 9 significantly outperforms the Realme V21 (39/100 vs 0/100).
battery
In the "battery" category, the ASUS ROG Phone 9 notably outperforms the Realme V21 (58/100 vs 36/100).
design
In the "design" category, the Realme V21 significantly outperforms the ASUS ROG Phone 9 (50/100 vs 16/100).
value for money
In the "value for money" category, the Realme V21 is a bit better (55/100 vs 41/100).
Which is better: the ASUS ROG Phone 9 or the Realme V21?
The ASUS ROG Phone 9 significantly outperforms the Realme V21 by 50 points (60/100 vs 10/100).
What is the rating of the ASUS ROG Phone 9 and the Realme V21?
The ASUS ROG Phone 9 has a MobileRank rating of 60/100, the Realme V21 — 10/100.
Which has the better camera: the ASUS ROG Phone 9 or the Realme V21?
The ASUS ROG Phone 9 leads on camera score (39/100 vs 0/100).
Which is more powerful: the ASUS ROG Phone 9 or the Realme V21?
The ASUS ROG Phone 9 leads on performance (72/100 vs 0/100).
Should you choose the ASUS ROG Phone 9 over the Realme V21?
The ASUS ROG Phone 9 is a better fit for active users. The Realme V21 is a better fit for everyday use.