OnePlus 9 vs Xiaomi 18 Fold
The OnePlus 9 (2021) runs on the Qualcomm Snapdragon 888, while the Xiaomi 18 Fold (2026) runs on the Xiaomi XRING O3; launch prices were $729 and $1639. By overall MobileRank rating, the Xiaomi 18 Fold leads — 86/100 vs 60/100 (a 26-point difference). Key differences: the Xiaomi 18 Fold has the bigger battery (6000 mAh vs 4500); the main camera is 48 MP vs 200 MP; the Xiaomi 18 Fold is faster in AnTuTu (5,228,014 vs 1,157,244); the OnePlus 9 is noticeably lighter (192g vs 219g).
Profile comparison
Category scores
OnePlus 9
Xiaomi 18 Fold
What makes OnePlus 9 better?
- Lighter: 192g vs 219g
- Cheaper at launch: $729 vs $1639
- Better display (80/100 vs 79/100)
What makes Xiaomi 18 Fold better?
- Higher AnTuTu: 5228014 vs 1157244
- Better Geekbench Single: 3715 vs 1500
- Better Geekbench Multi: 14213 vs 3537
- Bigger battery: 6000 vs 4500 mAh
- Faster charging: 67W vs 65W
- Better main camera: 200MP vs 48MP
- Faster wireless charging: 50W vs 15W
- Higher performance (99/100 vs 64/100)
- Better camera (85/100 vs 51/100)
- Longer battery life (75/100 vs 50/100)
- Better portability (64/100 vs 56/100)
Comparison verdict
Comparing the OnePlus 9 vs the Xiaomi 18 Fold, the Xiaomi 18 Fold scores 26 points higher (86/100 vs 60/100). In the "performance" category, the Xiaomi 18 Fold leads (99/100 vs 64/100). In the "camera" category, the Xiaomi 18 Fold leads (85/100 vs 51/100). In the "battery" category, the Xiaomi 18 Fold leads (75/100 vs 50/100). Value score: OnePlus 9 — 34/100, Xiaomi 18 Fold — 80/100; 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 Xiaomi 18 Fold significantly outperforms the OnePlus 9 (99/100 vs 64/100). In the "display" category, the OnePlus 9 and the Xiaomi 18 Fold are nearly equal (80/100 vs 79/100). In the "camera" category, the Xiaomi 18 Fold significantly outperforms the OnePlus 9 (85/100 vs 51/100). In the "battery" category, the Xiaomi 18 Fold notably outperforms the OnePlus 9 (75/100 vs 50/100). In the "portability" category, the Xiaomi 18 Fold is a bit better (64/100 vs 56/100).
Specs comparison
| Specification | OnePlus 9 | Xiaomi 18 Fold | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | Xiaomi XRING O3 | |
| AnTuTu | 1157244 | 5228014 | |
| Geekbench Single | 1500 | 3715 | |
| Geekbench Multi | 3537 | 14213 | |
| Display | 6.5" AMOLED | 7.6" LTPO AMOLED | |
| Resolution | 2400x1080 | 1672x2364 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4500 mAh | 6000 mAh | |
| Charging | 65W | 67W | |
| Wireless charging | 15W | 50W | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 16 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11 | Android 16 | |
| Brightness (peak) | 1100 nits | 4000 nits | |
| NFC | yes | yes | |
| Protection | — | IP59 | |
| Dimensions | 160.0×74.2×8.7 mm | 159.7×145.1×5.0 mm | |
| Weight | 192 g | 219 g | |
| Launch price | $729 | $1639 |
Camera comparison
OnePlus 9
- Main: 48MP f/1.8
- Ultrawide: 50MP
- Front: 16MP
Xiaomi 18 Fold
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 16MP
Display comparison
OnePlus 9
- 6.5" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Xiaomi 18 Fold
- 7.6" LTPO AMOLED
- Resolution: 1672x2364
- Refresh rate: 120 Hz
Battery and charging
OnePlus 9
- 4500 mAh
- Wired: 65W
- Wireless: 15W
Xiaomi 18 Fold
- 6000 mAh
- Wired: 67W
- Wireless: 50W
Overall performance score
We compared OnePlus 9 and Xiaomi 18 Fold, covering their specs and all relevant benchmarks.
Xiaomi 18 Fold leads OnePlus 9 by 77.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $910. OnePlus 9 was $910 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 18 Fold significantly outperforms the OnePlus 9 (99/100 vs 64/100).
display
In the "display" category, the OnePlus 9 and the Xiaomi 18 Fold are nearly equal (80/100 vs 79/100).
camera
In the "camera" category, the Xiaomi 18 Fold significantly outperforms the OnePlus 9 (85/100 vs 51/100).
battery
In the "battery" category, the Xiaomi 18 Fold notably outperforms the OnePlus 9 (75/100 vs 50/100).
portability
In the "portability" category, the Xiaomi 18 Fold is a bit better (64/100 vs 56/100).
Frequently asked questions
Which is better: the OnePlus 9 or the Xiaomi 18 Fold?
The Xiaomi 18 Fold significantly outperforms the OnePlus 9 by 26 points (86/100 vs 60/100).
What is the rating of the OnePlus 9 and the Xiaomi 18 Fold?
The OnePlus 9 has a MobileRank rating of 60/100, the Xiaomi 18 Fold — 86/100.
Which has the better camera: the OnePlus 9 or the Xiaomi 18 Fold?
The Xiaomi 18 Fold leads on camera score (85/100 vs 51/100).
Which is more powerful: the OnePlus 9 or the Xiaomi 18 Fold?
The Xiaomi 18 Fold leads on performance (99/100 vs 64/100).
Should you choose the OnePlus 9 over the Xiaomi 18 Fold?
The OnePlus 9 is a better fit for active users. The Xiaomi 18 Fold is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.