Compare phones
| Global Score | |
| 79.2 | 85.5 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10, 9.0 Pie | Android 11, 10 |
| 2019-07-24 | 2019-12-27 |
| 6.04 x 2.83 x 0.33 inches | 6.24 x 2.90 x 0.31 inches |
| 6.13 ounces | 6.07 ounces |
| Blue, Gray and White | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Glass (Corning Gorilla Glass 5) and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 6.1 inches | 6.5 inches |
| 1560 x 720 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 282 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 665 chipset | Samsung Exynos 9611 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 610 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 13.18 | 14.14 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.43 inches (1/2.3") 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 (240 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 11.44 | 11.55 |
| 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+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4030mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| 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
Samsung Galaxy A51 has a score of 85.5, which is just a bit better than the Xiaomi Mi A3's 79.2 score. These devices use the same Android 11 OS. The Samsung Galaxy A51 construction is a little bit thinner and a bit lighter than the Xiaomi Mi A3, even though they were released with only a couple months difference.
The Samsung Galaxy A51 counts with a bit better performance than Xiaomi Mi A3. Both of them have the same number of cores and a 4 GB RAM. The Samsung Galaxy A51 counts with a better display than Xiaomi Mi A3, because it has more pixels per inch in the display, a bit bigger screen and a lot better resolution of 1080 x 2400.
Galaxy A51 counts with just a bit bigger memory capacity to store more games and applications than Xiaomi Mi A3, and although they both have the same internal memory capacity, the Galaxy A51 also has a SD card slot that admits a maximum of 512 GB. The Xiaomi Mi A3 and the Galaxy A51 feature quite similar battery performance, although the Galaxy A51 has 4000mAh of battery capacity against 4030mAh.
Galaxy A51 shoots just a bit better photos and videos than Xiaomi Mi A3, because although it has a tinier diafragm aperture which is not favorable for shooting photographs or videos in poorly lited situations, and they both have the same video frame rates, the same resolution back camera and the same 3840x2160 (4K) video definition, the Galaxy A51 also counts with a bigger sensor which offers a higher photo and video quality.
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