Compare phones
| Global Score | |
| 79.2 | 87.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10, 9.0 Pie | Android 10 |
| 2019-07-24 | 2020-09-11 |
| 6.04 x 2.83 x 0.33 inches | 6.45 x 3.00 x 0.37 inches |
| 6.13 ounces | 7.51 ounces |
| Blue, Gray and White | Black and White |
| Glass (Corning Gorilla Glass 5) and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.1 inches | 6.7 inches |
| 1560 x 720 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED Plus |
| 282 pixels per inch | 385 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8 |
| Performance | |
| Qualcomm Snapdragon 665 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 610 GPU | Adreno 618 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 | 64.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.43 inches (1/2.3") sensor | 0.57 inches (1/1.76") 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 | -- |
| 11.44 | 11.88 |
| 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 | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 8.32 |
| 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
Samsung Galaxy M51 is better than the Xiaomi Mi A3, having an 87.7 score against 79.2. Both of these devices use Android OS (operating system), but the Samsung Galaxy M51 has the previous 10 version and Xiaomi Mi A3 has Android 11 version. Samsung Galaxy M51's design is newer than Xiaomi Mi A3's, but it's heavier and somewhat thicker.
The Galaxy M51 features just a bit better performance than Xiaomi Mi A3, and although they both have the same number of cores, the Galaxy M51 also has a larger amount of RAM. Samsung Galaxy M51 counts with a bit more vivid display than Xiaomi Mi A3, because it has a lot higher resolution of 1080 x 2340 pixels, a quite bigger display and a better display pixels density.
Samsung Galaxy M51 features just a bit more memory for games and applications than Xiaomi Mi A3, and although they both have the same internal storage, the Samsung Galaxy M51 also has a slot for SD memory cards that allows up to 512 GB. Samsung Galaxy M51 features just a bit better camera than Xiaomi Mi A3, and although they both have the same video frame rates, a same size aperture and the same 3840x2160 video resolution, the Samsung Galaxy M51 also has a back camera with a lot better 64 MP resolution and a way bigger back-facing camera sensor capturing more light and vivid colors.
The Samsung Galaxy M51 has a superior battery life than Xiaomi Mi A3, because it has a 7000mAh battery capacity.
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