Compare phones
| Global Score | |
| 90.8 | 78 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2020-04-29 | 2018-07-27 |
| 6.26 x 2.90 x 0.34 inches | 6.25 x 2.97 x 0.29 inches |
| 6.60 ounces | 5.93 ounces |
| Prism cube black | Black, Blue, Gold, Pink and Red |
| Aluminum and Plastic | Aluminum |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | -- |
| 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 980 chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Mali-G76 MP5 GPU | Adreno 512 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | No SD card slot |
| 15.38 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 12.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 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 (480 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.55 | 9.79 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.3 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 3010mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy A51 5G is better than the Xiaomi Mi A2, getting a global score of 90.8 against 78. The Galaxy A51 5G design is newer than Xiaomi Mi A2's, although it is thicker and heavier. Xiaomi Mi A2 features a screen that is just as good as the display in Samsung Galaxy A51 5G, although the Xiaomi Mi A2 has a just a little less pixels per display inch, a little bit worse 1080 x 2160 resolution and a little smaller screen.
Samsung Galaxy A51 5G features a superior storage capacity to install applications and games than Xiaomi Mi A2, and although they both have exactly the same internal storage, the Samsung Galaxy A51 5G also has a SD extension slot that holds up to 1000 GB. The Xiaomi Mi A2 has a processor that is just as good as Galaxy A51 5G's CPU, they have the same number of cores and the same RAM amount.
The Samsung Galaxy A51 5G has a superior battery life than Xiaomi Mi A2, because it has a 50% larger battery capacity. The Galaxy A51 5G features a superior camera than Xiaomi Mi A2, because although it has a smaller diafragm aperture, and they both have the same 3840x2160 video definition and the same 30 fps video frame rate, the Galaxy A51 5G also counts with a lot bigger back-facing camera sensor shooting lot better quality photographs and a back-facing camera with way more mega pixels.
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