OnePlus Ace 7 vs Xiaomi Mi 9
The OnePlus Ace 7 (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Xiaomi Mi 9 (2019) runs on the Qualcomm Snapdragon 855. By overall MobileRank rating, the OnePlus Ace 7 leads — 72/100 vs 19/100 (a 53-point difference). Key differences: the OnePlus Ace 7 has the bigger battery (9000 mAh vs 3300); the main camera is 50 MP vs 48 MP; the OnePlus Ace 7 is faster in AnTuTu (3,942,923 vs 824,513).
OnePlus Ace 7
Xiaomi Mi 9
- Higher AnTuTu: 3942923 vs 824513
- Better Geekbench Single: 3640 vs 968
- Better Geekbench Multi: 11033 vs 2731
- Bigger battery: 9000 vs 3300 mAh
- Faster charging: 100W vs 27W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 185Hz vs 60Hz
- Higher performance (92/100 vs 1/100)
- Longer battery life (80/100 vs 5/100)
- Better display (100/100 vs 0/100)
- Better camera (39/100 vs 31/100)
- Better design/ergonomics (83/100 vs 50/100)
- Better value for money (82/100 vs 55/100)
Comparing the OnePlus Ace 7 vs the Xiaomi Mi 9, the OnePlus Ace 7 scores 53 points higher (72/100 vs 19/100). In the "performance" category, the OnePlus Ace 7 leads (92/100 vs 1/100). In the "battery" category, the OnePlus Ace 7 leads (80/100 vs 5/100). In the "value for money" category, the Xiaomi Mi 9 leads (82/100 vs 55/100). In the "performance" category, the OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 (92/100 vs 1/100). In the "display" category, the OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 (100/100 vs 0/100). In the "camera" category, the Xiaomi Mi 9 is a bit better (39/100 vs 31/100). In the "battery" category, the OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 (80/100 vs 5/100). In the "design" category, the Xiaomi Mi 9 significantly outperforms the OnePlus Ace 7 (83/100 vs 50/100). In the "value for money" category, the Xiaomi Mi 9 notably outperforms the OnePlus Ace 7 (82/100 vs 55/100).
| Specification | OnePlus Ace 7 | Xiaomi Mi 9 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 855 | |
| AnTuTu | 3942923 | 824513 | |
| Geekbench Single | 3640 | 968 | |
| Geekbench Multi | 11033 | 2731 | |
| Display | 6.8" AMOLED | 6.4" AMOLED | |
| Resolution | 1272x2800 | 2340x1080 | |
| Refresh rate | 185 Hz | 60 Hz | |
| Battery | 9000 mAh | 3300 mAh | |
| Charging | 100W | 27W | |
| Wireless charging | 0W | 20W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 16 MP | |
| Telephoto | 0 MP | 12 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 64GB / 128GB | |
| OS | Android 16, ColorOS 16 | Android 9 | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | — | 157.5×74.7×7.6 mm | |
| Weight | — | 173 g | |
| Price | — | $400 |
OnePlus Ace 7
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi Mi 9
- Main: 48MP f/1.75
- Ultrawide: 16MP
- Telephoto: 12MP
- Front: 20MP
OnePlus Ace 7
- 6.8" AMOLED
- Resolution: 1272x2800
- Refresh rate: 185 Hz
Xiaomi Mi 9
- 6.4" AMOLED
- Resolution: 2340x1080
- Refresh rate: 60 Hz
OnePlus Ace 7
- 9000 mAh
- Wired: 100W
- No wireless charging
Xiaomi Mi 9
- 3300 mAh
- Wired: 27W
- Wireless: 20W
We compared OnePlus Ace 7 and Xiaomi Mi 9, covering their specs and all relevant benchmarks.
OnePlus Ace 7 leads Xiaomi Mi 9 by 378.2% in our overall performance rating.
OnePlus Ace 7
Price unknownperformance
In the "performance" category, the OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 (92/100 vs 1/100).
display
In the "display" category, the OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 (100/100 vs 0/100).
camera
In the "camera" category, the Xiaomi Mi 9 is a bit better (39/100 vs 31/100).
battery
In the "battery" category, the OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 (80/100 vs 5/100).
design
In the "design" category, the Xiaomi Mi 9 significantly outperforms the OnePlus Ace 7 (83/100 vs 50/100).
value for money
In the "value for money" category, the Xiaomi Mi 9 notably outperforms the OnePlus Ace 7 (82/100 vs 55/100).
Which is better: the OnePlus Ace 7 or the Xiaomi Mi 9?
The OnePlus Ace 7 significantly outperforms the Xiaomi Mi 9 by 53 points (72/100 vs 19/100).
What is the rating of the OnePlus Ace 7 and the Xiaomi Mi 9?
The OnePlus Ace 7 has a MobileRank rating of 72/100, the Xiaomi Mi 9 — 19/100.
Which has the better camera: the OnePlus Ace 7 or the Xiaomi Mi 9?
The Xiaomi Mi 9 leads on camera score (39/100 vs 31/100).
Which is more powerful: the OnePlus Ace 7 or the Xiaomi Mi 9?
The OnePlus Ace 7 leads on performance (92/100 vs 1/100).
Should you choose the OnePlus Ace 7 over the Xiaomi Mi 9?
The OnePlus Ace 7 is a better fit for gamers and power users, those who care about battery life. The Xiaomi Mi 9 is a better fit for budget-conscious buyers.