Compare phones
| Global Score | |
| 87.7 | 83.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | -- |
| 2020-09-11 | 2019-03-06 |
| 6.45 x 3.00 x 0.37 inches | 6.20 x 2.94 x 0.30 inches |
| 7.51 ounces | 6.10 ounces |
| Black and White | Black, Blue and Purple |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.7 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED Plus | AMOLED |
| 385 pixels per inch | 403 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.6 |
| Performance | |
| Qualcomm Snapdragon 730 SM7150-AA chipset | Qualcomm Snapdragon 855 chipset |
| Kryo 470, 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 |
| Adreno 618 GPU | Adreno 640 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 10.1 |
| Camera | |
| 64.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| -- | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.88 | 12.1 |
| 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 and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 7000mAh Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 8.32 | 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
Galaxy M51 has a global score of 87.7, which is a bit better than Xiaomi Mi 9's global score of 83.2. Galaxy M51 is a newer cellphone than Xiaomi Mi 9, although it is heavier and thicker. Xiaomi Mi 9 counts with a little sharper screen than Samsung Galaxy M51, because although it has a bit smaller screen, and they both have exactly the same 1080 x 2340 resolution, the Xiaomi Mi 9 also counts with a little better amount of pixels in each inch in the screen.
Samsung Galaxy M51 has a much better memory to install applications and games or saving photos and videos than Xiaomi Mi 9, and although they both have exactly the same internal storage, the Samsung Galaxy M51 also has a slot for external memory cards that supports up to 512 GB. Xiaomi Mi 9 has a little bit better processing power than Galaxy M51. Both of them have 8 cores and the same RAM memory amount.
The Xiaomi Mi 9 captures just a bit better pictures and videos than Galaxy M51, although it has a lower (4K) video definition, a tinier sensor taking lower quality videos and photographs and a camera in the back with much less megapixels, they both have a F1.8 camera aperture. Samsung Galaxy M51 counts with a very superior battery duration than Xiaomi Mi 9, because it has 7000mAh of battery capacity instead of 3300mAh.
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