Compare phones
| Global Score | |
| 81.1 | 85.5 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11, 10 |
| 2020-05-05 | 2019-12-27 |
| 6.53 x 3.02 x 0.35 inches | 6.24 x 2.90 x 0.31 inches |
| 7.37 ounces | 6.07 ounces |
| Glacier white, Interstellar gray and Tropical green | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Glass (Corning Gorilla Glass 5) and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 291.00 | $ 282.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 393 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Samsung Exynos 9611 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 618 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 14.14 |
| Camera | |
| 64.00 MP + 16.00 MP | 48.00 MP + 32.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.59 inches (1/1.7") 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 (960 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 12.1 | 11.55 |
| 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+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5020mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.92 |
| 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 Galaxy A51 is slightly better than Xiaomi Redmi Note 9 Pro, having a global score of 85.5 against 81.1. Even when the Galaxy A51 and the Xiaomi Redmi Note 9 Pro were released with only 4 months difference, the Galaxy A51 is thinner and somewhat lighter. Both of these phones work with Android OS (operating system), but Galaxy A51 has 11 version and Xiaomi Redmi Note 9 Pro has Android 10 version, providing the user lots of additional features and improved performance.
Xiaomi Redmi Note 9 Pro has a little faster processor than Galaxy A51, and although they both have 8 cpu cores, the Xiaomi Redmi Note 9 Pro also has a higher amount of RAM. The Samsung Galaxy A51 features a slightly better looking screen than Xiaomi Redmi Note 9 Pro, because although it has a quite smaller display, and they both have an equal resolution of 1080 x 2400px, the Samsung Galaxy A51 also counts with a just a bit greater pixels density.
Xiaomi Redmi Note 9 Pro has a slightly better camera than Galaxy A51, and although they both have the same 3840x2160 (4K) video definition and the same video frame rates, the Xiaomi Redmi Note 9 Pro also has a larger aperture, a bigger sensor capturing higher quality pictures and videos and a back facing camera with a way higher 64 megapixels resolution.
The Samsung Galaxy A51 counts with a way bigger memory capacity for applications and games than Xiaomi Redmi Note 9 Pro, and although they both have a slot for an SD memory card that holds a maximum of 512 GB, the Samsung Galaxy A51 also has 64 GB more internal storage capacity. Xiaomi Redmi Note 9 Pro has superior battery lifetime than Samsung Galaxy A51, because it has 5020mAh of battery capacity against 4000mAh.
Despite of being the best phone of the ones we compare here, the Galaxy A51 is also cheaper, making it a very good choice.
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