HMD Key vs Vivo X300 Ultra
The HMD Key (2025) runs on the Unisoc SC9832E, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 22/100 (a 69-point difference). Key differences: the Vivo X300 Ultra has the bigger battery (7000 mAh vs 4000); the main camera is 8 MP vs 200 MP; the Vivo X300 Ultra has NFC for contactless payments, the HMD Key doesn't; the HMD Key is noticeably lighter (185g vs 230g).
Profile comparison
Category scores
HMD Key
Vivo X300 Ultra
What makes HMD Key better?
- Lighter: 185g vs 230g
- Better portability (57/100 vs 39/100)
What makes Vivo X300 Ultra better?
- Bigger battery: 7000 vs 4000 mAh
- Faster charging: 100W vs 10W
- Better main camera: 200MP vs 8MP
- Higher refresh rate: 120Hz vs 60Hz
- Better camera (96/100 vs 10/100)
- Longer battery life (85/100 vs 22/100)
- Better display (89/100 vs 31/100)
Comparison verdict
Comparing the HMD Key vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 69 points higher (91/100 vs 22/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 10/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 22/100). In the "display" category, the Vivo X300 Ultra significantly outperforms the HMD Key (89/100 vs 31/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the HMD Key (96/100 vs 10/100). In the "battery" category, the Vivo X300 Ultra significantly outperforms the HMD Key (85/100 vs 22/100). In the "portability" category, the HMD Key notably outperforms the Vivo X300 Ultra (57/100 vs 39/100).
Specs comparison
| Specification | HMD Key | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Unisoc SC9832E | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | — | 4247433 | |
| Geekbench Single | — | 3639 | |
| Geekbench Multi | — | 11047 | |
| Display | 6.5" IPS LCD | 6.8" LTPO OLED | |
| Resolution | 576x1280 | 3168x1440 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 4000 mAh | 7000 mAh | |
| Charging | 10W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 8 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 2GB | 12GB / 16GB | |
| Storage | 32GB | 256GB / 512GB / 1TB | |
| OS | Android 14 | Android 16 | |
| Brightness (peak) | 460 nits | — | |
| NFC | no | yes | |
| Protection | — | IP69 | |
| Dimensions | 166.4×76.9×9.0 mm | 163.0×76.8×8.2 mm | |
| Weight | 185 g | 230 g | |
| Launch price | — | $950 |
Camera comparison
HMD Key
- Main: 8MP
- Front: 5MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
HMD Key
- 6.5" IPS LCD
- Resolution: 576x1280
- Refresh rate: 60 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
HMD Key
- 4000 mAh
- Wired: 10W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Benchmarks
Launch prices and where to check today's
HMD Key
Price unknownDetailed category analysis
display
In the "display" category, the Vivo X300 Ultra significantly outperforms the HMD Key (89/100 vs 31/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the HMD Key (96/100 vs 10/100).
battery
In the "battery" category, the Vivo X300 Ultra significantly outperforms the HMD Key (85/100 vs 22/100).
portability
In the "portability" category, the HMD Key notably outperforms the Vivo X300 Ultra (57/100 vs 39/100).
Frequently asked questions
Which is better: the HMD Key or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the HMD Key by 69 points (91/100 vs 22/100).
What is the rating of the HMD Key and the Vivo X300 Ultra?
The HMD Key has a MobileRank rating of 22/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the HMD Key or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 10/100).
Should you choose the HMD Key over the Vivo X300 Ultra?
The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.