Compare phones
| Global Score | |
| 90.8 | 83.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2020-04-29 | 2019-03-06 |
| 6.26 x 2.90 x 0.34 inches | 6.20 x 2.94 x 0.30 inches |
| 6.60 ounces | 6.10 ounces |
| Prism cube black | Black, Blue and Purple |
| Aluminum and Plastic | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.6 |
| Performance | |
| Samsung Exynos 980 chipset | Qualcomm Snapdragon 855 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Mali-G76 MP5 GPU | Adreno 640 GPU |
| 9.27 | 9.63 |
| 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 | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.55 | 12.1 |
| 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 | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.32 | 5.28 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | 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 | -- |
Comparison review
Samsung Galaxy A51 5G has a score of 90.8, which is just a bit better than Xiaomi Mi 9's score of 83.2. The Samsung Galaxy A51 5G construction is newer, but thicker and a bit heavier than Xiaomi Mi 9. The Xiaomi Mi 9 counts with a little bit better performance than Samsung Galaxy A51 5G. Both of them have the same number of cores and 6 GB of RAM.
Xiaomi Mi 9 counts with a slightly better display than Samsung Galaxy A51 5G, although it has a quite smaller display, a bit worse pixels amount per display inch and a quite lower resolution of 1080 x 2340. The Xiaomi Mi 9 captures a little bit better pictures and videos than Samsung Galaxy A51 5G, and although they both have a same resolution camera in the back, the same sensor size and the same 3840x2160 video quality, the Xiaomi Mi 9 also has higher 60 frames per second video frame rates and a bigger diafragm aperture.
Samsung Galaxy A51 5G has much more memory for applications and games than Xiaomi Mi 9, and although they both have the same internal storage, the Samsung Galaxy A51 5G also has a slot for an SD memory card that admits a maximum of 1000 GB. Galaxy A51 5G has improved battery duration than Xiaomi Mi 9, because it has 4500mAh of battery capacity instead of 3300mAh.
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