Compare phones
| Global Score | |
| 85.5 | 83.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2019-12-27 | 2019-03-06 |
| 6.24 x 2.90 x 0.31 inches | 6.20 x 2.94 x 0.30 inches |
| 6.07 ounces | 6.10 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Black, Blue and Purple |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.6 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 855 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 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 | |
| 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 (60 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.55 | 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 | |
| 4000mAh Li - Polymer Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 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
The Samsung Galaxy A51 is a little bit better than the Xiaomi Mi 9, having an 85.5 score against 83.2. Although the Samsung Galaxy A51 is a little thicker than the Xiaomi Mi 9, it's just a bit lighter and newer. Xiaomi Mi 9 has a bit more vivid screen than Galaxy A51, although it has a bit smaller display, a bit lower display density and a quite lower resolution of 1080 x 2340 pixels.
The Galaxy A51 has much more memory capacity to install applications and games than Xiaomi Mi 9, and although they both have exactly the same internal storage, the Galaxy A51 also has a slot for external memory cards that holds a maximum of 512 GB. The Xiaomi Mi 9 features just a bit better hardware performance than Samsung Galaxy A51, and although they both have a Octa-Core CPU, the Xiaomi Mi 9 also has more RAM memory.
Xiaomi Mi 9 shoots a bit better videos and photos than Samsung Galaxy A51, and although they both have the same 3840x2160 video definition, the same back camera sensor size and a same resolution back-facing camera, the Xiaomi Mi 9 also has better video frame rates and a larger camera aperture to take better captures and video in poorly lited situations.
The Galaxy A51 has longer battery life than Xiaomi Mi 9, because it has a 4000mAh battery size.
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