Compare phones
| Global Score | |
| 85.5 | 81.4 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 9.0 Pie |
| 2019-12-27 | 2019-04-15 |
| 6.24 x 2.90 x 0.31 inches | 5.81 x 2.78 x 0.29 inches |
| 6.07 ounces | 5.47 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | 16 777 216 |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | -- |
| Display / Screen | |
| 6.5 inches | 6 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 430 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.7 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 712 SDM712 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 616 GPU |
| 9.27 | 9.36 |
| 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 | |
| 48.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") 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 (960 fps) (HD) slow motion video |
| 11.55 | 11.66 |
| 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 | |
| 4000mAh Li - Polymer Battery | 3070mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.04 |
| 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
Samsung Galaxy A51 has an overall score of 85.5, which is slightly better than the Xiaomi Mi 9 SE's 81.4 score. These devices include Android operating system, but Samsung Galaxy A51 has an older 11 version while Xiaomi Mi 9 SE has Android 9.0 Pie. Even being the best in our current comparison, it must be told that it's also a a bit thicker and just a little heavier device.
Xiaomi Mi 9 SE features a little sharper screen than Samsung Galaxy A51, because although it has a little bit worse 1080 x 2340 resolution and a little smaller screen, it also counts with a just a little better screen pixels density. Xiaomi Mi 9 SE counts with a little bit better hardware performance than Samsung Galaxy A51, and although they both have 8 cores, the Xiaomi Mi 9 SE also has a larger amount of RAM memory.
The Xiaomi Mi 9 SE shoots a bit better pictures and videos than Galaxy A51, and although they both have the same 30 fps video frame rates, a same resolution back-facing camera, a same size back-facing camera sensor and the same 3840x2160 video definition, the Xiaomi Mi 9 SE also has a larger aperture.
Galaxy A51 features a very superior storage capacity to store more apps and games than Xiaomi Mi 9 SE, and although they both have exactly the same internal storage capacity, the Galaxy A51 also has a slot for SD memory cards that allows up to 512 GB. The Galaxy A51 features superior battery performance than Xiaomi Mi 9 SE, because it has a 4000mAh battery size instead of 3070mAh.
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