Compare phones
| Global Score | |
| 90.8 | 79 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11, 10 |
| 2020-04-29 | 2020-04-07 |
| 6.26 x 2.90 x 0.34 inches | 6.53 x 3.02 x 0.35 inches |
| 6.60 ounces | 7.37 ounces |
| Prism cube black | Aurora blue, Glacier white and Interstellar grey |
| Aluminum and Plastic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | $ 249.00 |
| Display / Screen | |
| 6.5 inches | 6.7 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 393 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| Samsung Exynos 980 chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Mali-G76 MP5 GPU | Adreno 618 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 15.38 | 11.74 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.80 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 (480 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.55 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 6.8 |
| 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
The Galaxy A51 5G is better than the Xiaomi Redmi Note 9S, getting a global score of 90.8 against 79. Even when the Galaxy A51 5G and Xiaomi Redmi Note 9S were released only a few months apart, the Galaxy A51 5G is a little bit thinner and somewhat lighter. These phones use the same Android 11 operating system, so they should give you very similar OS features.
The Samsung Galaxy A51 5G features a little sharper screen than Xiaomi Redmi Note 9S, because although it has a bit smaller display, and they both have the same resolution of 1080 x 2400px, the Samsung Galaxy A51 5G also counts with a little better pixel density. Samsung Galaxy A51 5G has much more memory for games and applications than Xiaomi Redmi Note 9S, because it has 64 GB more internal memory capacity and a slot for SD memory cards that allows up to 1000 GB.
The Xiaomi Redmi Note 9S's CPU is just as good as the CPU in Samsung Galaxy A51 5G, and although the Xiaomi Redmi Note 9S has a lower amount of RAM, they both have a Octa-Core CPU. Xiaomi Redmi Note 9S counts with a little better battery duration than Samsung Galaxy A51 5G, because it has a 12% larger battery size.
The Galaxy A51 5G and the Xiaomi Redmi Note 9S both feature similar cameras, and although the Xiaomi Redmi Note 9S has a bigger camera aperture to take better photos and video in low-light situations, they both have a 48 mega-pixels camera in the back, the same (4K) video quality, the same 30 frames per second video frame rates and a 0.5 inches sensor.
The Samsung Galaxy A51 5G costs more than Xiaomi Redmi Note 9S, but you can get a better phone for that few extra dollars.
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