HMD Key vs Xiaomi 18 Fold
The HMD Key (2025) runs on the Unisoc SC9832E, while the Xiaomi 18 Fold (2026) runs on the Xiaomi XRING O3. By overall MobileRank rating, the Xiaomi 18 Fold leads — 86/100 vs 22/100 (a 64-point difference). Key differences: the Xiaomi 18 Fold has the bigger battery (6000 mAh vs 4000); the main camera is 8 MP vs 200 MP; the Xiaomi 18 Fold has NFC for contactless payments, the HMD Key doesn't; the HMD Key is noticeably lighter (185g vs 219g).
Profile comparison
Category scores
HMD Key
Xiaomi 18 Fold
What makes HMD Key better?
- Lighter: 185g vs 219g
- Overall rating 22/100
What makes Xiaomi 18 Fold better?
- Bigger battery: 6000 vs 4000 mAh
- Faster charging: 67W vs 10W
- Better main camera: 200MP vs 8MP
- Higher refresh rate: 120Hz vs 60Hz
- Better camera (85/100 vs 10/100)
- Longer battery life (75/100 vs 22/100)
- Better display (79/100 vs 31/100)
- Better portability (64/100 vs 57/100)
Comparison verdict
Comparing the HMD Key vs the Xiaomi 18 Fold, the Xiaomi 18 Fold scores 64 points higher (86/100 vs 22/100). In the "camera" category, the Xiaomi 18 Fold leads (85/100 vs 10/100). In the "battery" category, the Xiaomi 18 Fold leads (75/100 vs 22/100). In the "display" category, the Xiaomi 18 Fold significantly outperforms the HMD Key (79/100 vs 31/100). In the "camera" category, the Xiaomi 18 Fold significantly outperforms the HMD Key (85/100 vs 10/100). In the "battery" category, the Xiaomi 18 Fold significantly outperforms the HMD Key (75/100 vs 22/100). In the "portability" category, the Xiaomi 18 Fold is a bit better (64/100 vs 57/100).
Specs comparison
| Specification | HMD Key | Xiaomi 18 Fold | |
|---|---|---|---|
| Processor | Unisoc SC9832E | Xiaomi XRING O3 | |
| AnTuTu | — | 5228014 | |
| Geekbench Single | — | 3715 | |
| Geekbench Multi | — | 14213 | |
| Display | 6.5" IPS LCD | 7.6" LTPO AMOLED | |
| Resolution | 576x1280 | 1672x2364 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 4000 mAh | 6000 mAh | |
| Charging | 10W | 67W | |
| Wireless charging | 0W | 50W | |
| Main camera | 8 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 16 MP | |
| RAM | 2GB | 12GB / 16GB | |
| Storage | 32GB | 256GB / 512GB / 1TB | |
| OS | Android 14 | Android 16 | |
| Brightness (peak) | 460 nits | 4000 nits | |
| NFC | no | yes | |
| Protection | — | IP59 | |
| Dimensions | 166.4×76.9×9.0 mm | 159.7×145.1×5.0 mm | |
| Weight | 185 g | 219 g | |
| Launch price | — | $1639 |
Camera comparison
HMD Key
- Main: 8MP
- Front: 5MP
Xiaomi 18 Fold
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 16MP
Display comparison
HMD Key
- 6.5" IPS LCD
- Resolution: 576x1280
- Refresh rate: 60 Hz
Xiaomi 18 Fold
- 7.6" LTPO AMOLED
- Resolution: 1672x2364
- Refresh rate: 120 Hz
Battery and charging
HMD Key
- 4000 mAh
- Wired: 10W
- No wireless charging
Xiaomi 18 Fold
- 6000 mAh
- Wired: 67W
- Wireless: 50W
Benchmarks
Launch prices and where to check today's
HMD Key
Price unknownDetailed category analysis
display
In the "display" category, the Xiaomi 18 Fold significantly outperforms the HMD Key (79/100 vs 31/100).
camera
In the "camera" category, the Xiaomi 18 Fold significantly outperforms the HMD Key (85/100 vs 10/100).
battery
In the "battery" category, the Xiaomi 18 Fold significantly outperforms the HMD Key (75/100 vs 22/100).
portability
In the "portability" category, the Xiaomi 18 Fold is a bit better (64/100 vs 57/100).
Frequently asked questions
Which is better: the HMD Key or the Xiaomi 18 Fold?
The Xiaomi 18 Fold significantly outperforms the HMD Key by 64 points (86/100 vs 22/100).
What is the rating of the HMD Key and the Xiaomi 18 Fold?
The HMD Key has a MobileRank rating of 22/100, the Xiaomi 18 Fold — 86/100.
Which has the better camera: the HMD Key or the Xiaomi 18 Fold?
The Xiaomi 18 Fold leads on camera score (85/100 vs 10/100).
Should you choose the HMD Key over the Xiaomi 18 Fold?
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.