Compare phones
| Global Score | |
| 85.5 | 76 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 6.0 Marshmallow |
| 2019-12-27 | 2016-11-01 |
| 6.24 x 2.90 x 0.31 inches | 6.15 x 3.04 x 0.30 inches |
| 6.07 ounces | 5.86 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Black and Silver |
| Plastic and Plastic | Aluminum and Glass |
| Scratch-Resistant Glass | -- |
| $ 282.00 | $ 516.00 |
| Display / Screen | |
| 6.5 inches | 5.7 inches |
| 2400 x 1080 pixels | 1920 x 1080 pixels (Full HD) |
| Super AMOLED | OLED |
| 405 pixels per inch | 386 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.9 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 821 MSM8996 Pro chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo, 64-bit (Quad-Core 2350 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 530 GPU |
| 9.27 | 9.09 |
| 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 | 23.00 MP + 8.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.38 inches (1/2.6") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.55 | 8.69 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | -- |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.1 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4070mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.2 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy A51 is better than the Xiaomi Mi Note 2, getting a score of 85.5 against 76. The Galaxy A51 construction is a lot newer than Xiaomi Mi Note 2's, although it's just a little thicker and a little bit heavier. Both devices in this review come with Android OS (Operating System), but the Galaxy A51 has an older 11 version while Xiaomi Mi Note 2 has Android 6.0 Marshmallow version.
Galaxy A51 counts with a bit better hardware performance than Xiaomi Mi Note 2, because although it has a lower amount of RAM, it also counts with 4 more processing cores. Galaxy A51 has a bit better looking screen than Xiaomi Mi Note 2, because it has a quite better resolution of 1080 x 2400 pixels, a little bit better display pixels density and a little bigger screen.
Samsung Galaxy A51 has a much bigger memory for apps and games than Xiaomi Mi Note 2, and although they both have exactly the same 128 GB internal memory, the Samsung Galaxy A51 also has a slot for external memory cards that allows up to 512 GB. Samsung Galaxy A51 shoots way better videos and photos than Xiaomi Mi Note 2, and although they both have a F2 aperture, the same video frame rates and the same 3840x2160 video definition, the Samsung Galaxy A51 also has a much larger back-facing camera sensor taking much better quality videos and photos and a lot more megapixels camera.
Xiaomi Mi Note 2 features just a bit better battery duration than Samsung Galaxy A51, because it has a 4070mAh battery size.
The Galaxy A51 not only is the best phones of the ones we compare here, but it's also a lot cheaper.
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