HMD Arc vs HMD Key
The HMD Arc (2025) runs on the Unisoc SC9863A, while the HMD Key (2025) runs on the Unisoc SC9832E. By overall MobileRank rating, the HMD Key leads — 22/100 vs 20/100 (a 2-point difference). Key differences: the HMD Arc has the bigger battery (5000 mAh vs 4000); the main camera is 13 MP vs 8 MP.
Profile comparison
Category scores
HMD Arc
HMD Key
What makes HMD Arc better?
- Bigger battery: 5000 vs 4000 mAh
- Better main camera: 13MP vs 8MP
- Longer battery life (43/100 vs 22/100)
What makes HMD Key better?
- Overall rating 22/100
Comparison verdict
Comparing the HMD Arc vs the HMD Key, the HMD Key scores 2 points higher (22/100 vs 20/100). In the "battery" category, the HMD Arc leads (43/100 vs 22/100). In the "display" category, both devices are on the same level — 31/100. In the "camera" category, both devices are on the same level — 10/100. In the "battery" category, the HMD Arc notably outperforms the HMD Key (43/100 vs 22/100). In the "portability" category, both devices are on the same level — 57/100.
Specs comparison
| Specification | HMD Arc | HMD Key | |
|---|---|---|---|
| Processor | Unisoc SC9863A | Unisoc SC9832E | |
| AnTuTu | 153667 | — | |
| Geekbench Single | 205 | — | |
| Geekbench Multi | 846 | — | |
| Display | 6.5" IPS LCD | 6.5" IPS LCD | |
| Resolution | 576x1280 | 576x1280 | |
| Refresh rate | 60 Hz | 60 Hz | |
| Battery | 5000 mAh | 4000 mAh | |
| Charging | 10W | 10W | |
| Main camera | 13 MP | 8 MP | |
| Front camera | 5 MP | 5 MP | |
| RAM | 4GB | 2GB | |
| Storage | 64GB | 32GB | |
| OS | Android 14 Go | Android 14 | |
| Brightness (peak) | 460 nits | 460 nits | |
| NFC | no | no | |
| Protection | IP54 | — | |
| Dimensions | 166.4×76.9×9.0 mm | 166.4×76.9×9.0 mm | |
| Weight | 185 g | 185 g | |
| Launch price | — | — |
Camera comparison
HMD Arc
- Main: 13MP
- Front: 5MP
HMD Key
- Main: 8MP
- Front: 5MP
Display comparison
HMD Arc
- 6.5" IPS LCD
- Resolution: 576x1280
- Refresh rate: 60 Hz
HMD Key
- 6.5" IPS LCD
- Resolution: 576x1280
- Refresh rate: 60 Hz
Battery and charging
HMD Arc
- 5000 mAh
- Wired: 10W
- No wireless charging
HMD Key
- 4000 mAh
- Wired: 10W
- No wireless charging
Benchmarks
Detailed category analysis
display
In the "display" category, both devices are on the same level — 31/100.
camera
In the "camera" category, both devices are on the same level — 10/100.
battery
In the "battery" category, the HMD Arc notably outperforms the HMD Key (43/100 vs 22/100).
portability
In the "portability" category, both devices are on the same level — 57/100.
Frequently asked questions
Which is better: the HMD Arc or the HMD Key?
The HMD Key edges out the HMD Arc by just 2 points — the two devices are very close in overall level.
What is the rating of the HMD Arc and the HMD Key?
The HMD Arc has a MobileRank rating of 20/100, the HMD Key — 22/100.
Should you choose the HMD Arc over the HMD Key?
Neither model stands out enough to recommend it for a specific use case: the clearest difference is battery life — better on the HMD Arc (43/100 vs 22/100).