Compare phones
| Global Score | |
| 79 | 90.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10 | Android 11, 10 |
| 2020-04-07 | 2020-04-29 |
| 6.53 x 3.02 x 0.35 inches | 6.26 x 2.90 x 0.34 inches |
| 7.37 ounces | 6.60 ounces |
| Aurora blue, Glacier white and Interstellar grey | Prism cube black |
| Glass (Corning Gorilla Glass 5) | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | $ 339.00 |
| 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 980 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 618 GPU | Mali-G76 MP5 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 11.74 | 15.38 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 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 (960 fps) (HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 11.55 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 5020mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | 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 5G is better than Xiaomi Redmi Note 9S, having a overall score of 90.8 against 79. These phones work with the same Android 11 operating system. Samsung Galaxy A51 5G's body is a little thinner and somewhat lighter than the Xiaomi Redmi Note 9S, even when both were released with only a couple of months difference.
The Galaxy A51 5G has a bit better display than Xiaomi Redmi Note 9S, because although it has a quite smaller screen, and they both have the same resolution of 1080 x 2400 pixels, the Galaxy A51 5G also counts with a bit higher display density. The Galaxy A51 5G features a much better memory for applications, games, photos and videos than Xiaomi Redmi Note 9S, because it has an external memory card slot that supports a maximum of 1000 GB and 128 GB internal storage.
The Galaxy A51 5G has a CPU that's very similar to the CPU in Xiaomi Redmi Note 9S, and although the Galaxy A51 5G has a larger amount of RAM memory, they both have the same number of cores. The Galaxy A51 5G and Xiaomi Redmi Note 9S feature very similar cameras, and although the Galaxy A51 5G has a tinier aperture, they both have the same (4K) video resolution, the same video frame rates, a 0.5 inches camera sensor and a camera in the back with a 48 mega-pixels resolution.
Xiaomi Redmi Note 9S counts with a bit better battery duration than Samsung Galaxy A51 5G, because it has 5020mAh of battery capacity.
The Galaxy A51 5G is more expensive than Xiaomi Redmi Note 9S, but you can get a better phone for that extra money.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.