Compare phones
| Global Score | |
| 75 | 87.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 9.0 Pie, 8.1 Oreo, 8.0 Oreo, 7.1 Nougat | Android 10 |
| 2017-09-12 | 2020-09-11 |
| 6.12 x 2.98 x 0.29 inches | 6.45 x 3.00 x 0.37 inches |
| 5.82 ounces | 7.51 ounces |
| Black, Gold and Pink | Black and White |
| Metal | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 5.5 inches | 6.7 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED Plus |
| 401 pixels per inch | 385 pixels per inch |
| 450 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 506 GPU | Adreno 618 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 14.14 |
| Camera | |
| 12.00 MP + 5.00 MP | 64.00 MP + 32.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| -- | 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 (120 fps) (HD) slow motion video | -- |
| 9.35 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3080mAh Li - Ion Battery | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 8.32 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy M51 has an overall score of 87.7, which is better than the Xiaomi Mi A1's 75 general score. Both devices in this review have Android operating system, but the Samsung Galaxy M51 has the previous 10 version while Xiaomi Mi A1 has Android 9.0 Pie version. Even though Samsung Galaxy M51 is newer than the Xiaomi Mi A1, it's incredibly thicker and heavier.
The Galaxy M51 features just a bit better hardware performance than Xiaomi Mi A1, and although they both have a Octa-Core CPU, the Galaxy M51 also has a larger amount of RAM. The Xiaomi Mi A1 counts with a bit better screen than Galaxy M51, because although it has a little bit worse resolution of 1080 x 1920 pixels and a little bit smaller display, it also counts with a bit greater screen pixel density.
The Samsung Galaxy M51 has a lot better camera than Xiaomi Mi A1, and although they both have the same video frame rate and the same 3840x2160 video resolution, the Samsung Galaxy M51 also has a larger diafragm aperture and a lot higher 64 MP resolution back-facing camera. The Galaxy M51 counts with a much better memory for apps and games than Xiaomi Mi A1, because it has 128 GB internal memory and a slot for an SD memory card that supports a maximum of 512 GB.
The Galaxy M51 features a way better battery duration than Xiaomi Mi A1, because it has 7000mAh of battery capacity instead of 3080mAh.
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