Compare phones
| Global Score | |
| 85.5 | 81.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2019-12-27 | 2017-10-10 |
| 6.24 x 2.90 x 0.31 inches | 5.98 x 2.97 x 0.30 inches |
| 6.07 ounces | 6.53 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Black |
| Plastic and Plastic | Aluminum and Ceramic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | $ 614.00 |
| Display / Screen | |
| 6.5 inches | 6 inches |
| 2400 x 1080 pixels | 2160 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 402 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 835 MSM8998 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 280, 64-bit, 10 nm (Octa-Core 2450 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 540 GPU |
| 9.27 | 9.45 |
| Storage | |
| 128 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 13.3 |
| Camera | |
| 48.00 MP + 32.00 MP | 12.00 MP + 5.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.34 inches (1/2.9") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.55 | 9.57 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3400mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.36 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A51 has an overall score of 85.5, which is slightly better than the Xiaomi Mi MIX 2's global score of 81.2. The Galaxy A51 body is notably newer and a bit lighter, but also a little thicker than the Xiaomi Mi MIX 2. Xiaomi Mi MIX 2 has a screen that's just as good as the screen in Galaxy A51, although the Xiaomi Mi MIX 2 has a little smaller screen, a little less pixels per inch of screen and a bit lower resolution of 1080 x 2160px.
The Xiaomi Mi MIX 2 has just a bit better processing power than Galaxy A51, and although they both have 8 CPU cores, the Xiaomi Mi MIX 2 also has a higher amount of RAM memory. The Galaxy A51 features just a bit bigger storage for applications and games than Xiaomi Mi MIX 2, because although it has only 128 GB internal storage capacity, it also counts with an external SD slot that allows up to 512 GB.
The Galaxy A51 has a way better camera than Xiaomi Mi MIX 2, and although they both have the same video definition, the same video frame rate and the same aperture, the Galaxy A51 also has a lot more mega-pixels camera in the back and a lot bigger sensor providing a much higher image quality. The Samsung Galaxy A51 features better battery duration than Xiaomi Mi MIX 2, because it has an 18 percent larger battery capacity.
In addition to being the best phone of the ones we compare here, the Galaxy A51 is also by far the cheapest, making it very easy to pick between these phones.
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