Compare phones
| Global Score | |
| 78 | 90.8 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 11, 10 |
| 2018-07-27 | 2020-04-29 |
| 6.25 x 2.97 x 0.29 inches | 6.26 x 2.90 x 0.34 inches |
| 5.93 ounces | 6.60 ounces |
| Black, Blue, Gold, Pink and Red | Prism cube black |
| Aluminum | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 339.00 |
| Display / Screen | |
| 6 inches | 6.5 inches |
| 2160 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 402 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Samsung Exynos 980 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Adreno 512 GPU | Mali-G76 MP5 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 1000 GB) external memory slot |
| 10.1 | 15.38 |
| Camera | |
| 12.00 MP + 20.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.34 inches (1/2.9") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.79 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3010mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 4.96 | 6.32 |
| 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 Samsung Galaxy A51 5G has an overall score of 90.8, which is better than the Xiaomi Mi A2's general score of 78. Samsung Galaxy A51 5G's construction is newer, but heavier and thicker than Xiaomi Mi A2. Galaxy A51 5G's processing unit is just as good as the processor in Xiaomi Mi A2, they have the same RAM memory amount and 8 cores.
Galaxy A51 5G has a screen that is just as good as Xiaomi Mi A2's screen, although the Galaxy A51 5G also has a slightly higher 1080 x 2400 resolution, a just a bit greater pixels quantity per inch of display and a quite larger screen. The Samsung Galaxy A51 5G features a lot bigger memory for games and applications than Xiaomi Mi A2, and although they both have equal 128 GB internal memory, the Samsung Galaxy A51 5G also has a slot for an SD memory card that supports a maximum of 1000 GB.
The Samsung Galaxy A51 5G counts with a superior camera than Xiaomi Mi A2, because although it has a tinier diafragm aperture which is not favorable for shooting photographs in low-light environments, and they both have the same 30 frames per second video frame rate and the same 3840x2160 (4K) video definition, the Samsung Galaxy A51 5G also counts with a much bigger back-facing camera sensor and a lot more megapixels camera in the back.
Samsung Galaxy A51 5G has a way better battery performance than Xiaomi Mi A2, because it has a 50% greater battery size.
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