Compare phones
| Global Score | |
| 89 | 85.5 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 11, 10 |
| 2021-08-10 | 2019-12-27 |
| 6.40 x 2.97 x 0.31 inches | 6.24 x 2.90 x 0.31 inches |
| 7.94 ounces | 6.07 ounces |
| Ceramic Black, Ceramic White and Shadow Gray | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Aluminum and Ceramic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | Super AMOLED |
| 393 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888+ SM8350-AC chipset | Samsung Exynos 9611 chipset |
| Kryo 680 Prime, 64-bit, 5 nm (Octa-Core 3000 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.72 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 108.00 MP + 20.00 MP | 48.00 MP + 32.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (480 fps) (Full HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 13.75 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4500mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.32 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Xiaomi Mi Mix 4 is a bit better than Galaxy A51, with a global score of 89 against 85.5. The Xiaomi Mi Mix 4 design has the same thickness than the Galaxy A51, but it's much heavier. These devices have the same Android 11 OS. Xiaomi Mi Mix 4 features just a bit better performance than Galaxy A51, and although they both have 8 processing cores, the Xiaomi Mi Mix 4 also has a greater amount of RAM.
Galaxy A51 has a screen that is just as good as the Xiaomi Mi Mix 4 one, because although the Galaxy A51 has a quite smaller screen, and they both have exactly the same 1080 x 2400 resolution, it also counts with a little bit more pixels per inch in the screen. The Galaxy A51 features a lot bigger storage capacity to install applications and games than Xiaomi Mi Mix 4, and although they both have exactly the same 128 GB internal storage, the Galaxy A51 also has a slot for an external memory card that admits a maximum of 512 GB.
Xiaomi Mi Mix 4 features a superior camera than Galaxy A51, because it has a much higher video resolution, a camera with way more mega pixels, a larger diafragm aperture to take better low light captures and video and a much larger camera sensor providing a way better image quality. Xiaomi Mi Mix 4 counts with a little longer battery lifetime than Galaxy A51, because it has 4500mAh of battery capacity against 4000mAh.
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