ASUS Asus Zenfone 12 Ultra vs Realme V21
Comparing the ASUS Asus Zenfone 12 Ultra (2025) and the Realme V21 (2022) on specs and benchmarks. By overall MobileRank rating, the ASUS Asus Zenfone 12 Ultra leads — 62/100 vs 10/100 (a 52-point difference). Key differences: the ASUS Asus Zenfone 12 Ultra has the bigger battery (5500 mAh vs 5000); the main camera is 50 MP vs 13 MP; the ASUS Asus Zenfone 12 Ultra has NFC for contactless payments, the Realme V21 doesn't.
ASUS Asus Zenfone 12 Ultra
Realme V21
- Bigger battery: 5500 vs 5000 mAh
- Better main camera: 50MP vs 13MP
- Higher performance (65/100 vs 0/100)
- Better camera (52/100 vs 0/100)
- Longer battery life (57/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Better design/ergonomics (50/100 vs 25/100)
Comparing the ASUS Asus Zenfone 12 Ultra vs the Realme V21, the ASUS Asus Zenfone 12 Ultra scores 52 points higher (62/100 vs 10/100). In the "performance" category, the ASUS Asus Zenfone 12 Ultra leads (65/100 vs 0/100). In the "camera" category, the ASUS Asus Zenfone 12 Ultra leads (52/100 vs 0/100). In the "battery" category, the ASUS Asus Zenfone 12 Ultra leads (57/100 vs 36/100). In the "performance" category, the ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 (65/100 vs 0/100). In the "display" category, the ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 (100/100 vs 0/100). In the "camera" category, the ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 (52/100 vs 0/100). In the "battery" category, the ASUS Asus Zenfone 12 Ultra notably outperforms the Realme V21 (57/100 vs 36/100). In the "design" category, the Realme V21 notably outperforms the ASUS Asus Zenfone 12 Ultra (50/100 vs 25/100). In the "value for money" category, both devices are on the same level — 55/100.
| Specification | ASUS Asus Zenfone 12 Ultra | Realme V21 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | — | |
| AnTuTu | 2760000 | — | |
| Geekbench Single | 3050 | — | |
| Geekbench Multi | 9300 | — | |
| Display | 6.8" LTPO AMOLED | 6.6" TFT | |
| Resolution | 1080x2400 | 720x1612 | |
| Refresh rate | 144 Hz | — | |
| Battery | 5500 mAh | 5000 mAh | |
| Charging | 65W | — | |
| Wireless charging | 15W | 0W | |
| Main camera | 50 MP | 13 MP | |
| Ultrawide | 13 MP | 0 MP | |
| Telephoto | 32 MP | 0 MP | |
| Front camera | 32 MP | 8 MP | |
| RAM | 12GB / 16GB | 4GB / 6GB / 8GB | |
| Storage | 256GB / 512GB | 128GB | |
| OS | Android 15, up to 2 major Android upgrades | Android 12, Realme UI 3.0 | |
| Brightness (peak) | 2500 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 163.8×77.0×8.9 mm | — | |
| Weight | 220 g | — | |
| Price | — | — |
ASUS Asus Zenfone 12 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 13MP
- Telephoto: 32MP
- Front: 32MP
Realme V21
- Main: 13MP f/f/2.2
- Front: 8MP
ASUS Asus Zenfone 12 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1080x2400
- Refresh rate: 144 Hz
Realme V21
- 6.6" TFT
- Resolution: 720x1612
- Refresh rate: —
ASUS Asus Zenfone 12 Ultra
- 5500 mAh
- Wired: 65W
- Wireless: 15W
Realme V21
- 5000 mAh
- No wireless charging
performance
In the "performance" category, the ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 (65/100 vs 0/100).
display
In the "display" category, the ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 (100/100 vs 0/100).
camera
In the "camera" category, the ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 (52/100 vs 0/100).
battery
In the "battery" category, the ASUS Asus Zenfone 12 Ultra notably outperforms the Realme V21 (57/100 vs 36/100).
design
In the "design" category, the Realme V21 notably outperforms the ASUS Asus Zenfone 12 Ultra (50/100 vs 25/100).
value for money
In the "value for money" category, both devices are on the same level — 55/100.
Which is better: the ASUS Asus Zenfone 12 Ultra or the Realme V21?
The ASUS Asus Zenfone 12 Ultra significantly outperforms the Realme V21 by 52 points (62/100 vs 10/100).
What is the rating of the ASUS Asus Zenfone 12 Ultra and the Realme V21?
The ASUS Asus Zenfone 12 Ultra has a MobileRank rating of 62/100, the Realme V21 — 10/100.
Which has the better camera: the ASUS Asus Zenfone 12 Ultra or the Realme V21?
The ASUS Asus Zenfone 12 Ultra leads on camera score (52/100 vs 0/100).
Which is more powerful: the ASUS Asus Zenfone 12 Ultra or the Realme V21?
The ASUS Asus Zenfone 12 Ultra leads on performance (65/100 vs 0/100).
Should you choose the ASUS Asus Zenfone 12 Ultra over the Realme V21?
The ASUS Asus Zenfone 12 Ultra is a better fit for active users. The Realme V21 is a better fit for everyday use.