Realme 12 vs Xiaomi 15 Ultra
The Realme 12 (2024) runs on the MediaTek Dimensity 6100+, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $200 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 47/100 (a 38-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5000); the main camera is 108 MP vs 50 MP; the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 513,809); the Realme 12 is noticeably lighter (188g vs 225g).
Realme 12
Xiaomi 15 Ultra
- Better main camera: 108MP vs 50MP
- Lighter: 188g vs 225g
- Cheaper at launch: $200 vs $999
- Better portability (68/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 513809
- Better Geekbench Single: 3050 vs 689
- Better Geekbench Multi: 10200 vs 1884
- Bigger battery: 6000 vs 5000 mAh
- Faster charging: 90W vs 45W
- Higher performance (92/100 vs 41/100)
- Better camera (87/100 vs 41/100)
- Longer battery life (80/100 vs 48/100)
- Better display (90/100 vs 66/100)
Comparing the Realme 12 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 38 points higher (85/100 vs 47/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 41/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 41/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 48/100). Value score: Realme 12 — 56/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Realme 12 (92/100 vs 41/100). In the "display" category, the Xiaomi 15 Ultra notably outperforms the Realme 12 (90/100 vs 66/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Realme 12 (87/100 vs 41/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Realme 12 (80/100 vs 48/100). In the "portability" category, the Realme 12 significantly outperforms the Xiaomi 15 Ultra (68/100 vs 29/100).
| Specification | Realme 12 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 6100+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 513809 | 3030376 | |
| Geekbench Single | 689 | 3050 | |
| Geekbench Multi | 1884 | 10200 | |
| Display | 6.7" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | 2400x1080 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5000 mAh | 6000 mAh | |
| Charging | 45W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 108 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 8GB | 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 14 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 2000 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP54 | IP68 | |
| Dimensions | 163.0×75.5×7.9 mm | 161.3×75.3×9.4 mm | |
| Weight | 188 g | 225 g | |
| Launch price | $200 | $999 |
Realme 12
- Main: 108MP f/f/1.75
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Realme 12
- 6.7" IPS LCD
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Realme 12
- 5000 mAh
- Wired: 45W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Realme 12 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Realme 12 by 83.0% in our overall performance rating.
Launch price difference: $799. Realme 12 was $799 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Realme 12 (92/100 vs 41/100).
display
In the "display" category, the Xiaomi 15 Ultra notably outperforms the Realme 12 (90/100 vs 66/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Realme 12 (87/100 vs 41/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Realme 12 (80/100 vs 48/100).
portability
In the "portability" category, the Realme 12 significantly outperforms the Xiaomi 15 Ultra (68/100 vs 29/100).
Which is better: the Realme 12 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the Realme 12 by 38 points (85/100 vs 47/100).
What is the rating of the Realme 12 and the Xiaomi 15 Ultra?
The Realme 12 has a MobileRank rating of 47/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Realme 12 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 41/100).
Which is more powerful: the Realme 12 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 41/100).
Should you choose the Realme 12 over the Xiaomi 15 Ultra?
The Realme 12 is a better fit for everyday use. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.