Compare phones
| Global Score | |
| 74.6 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 10 |
| 2019-10-16 | 2020-06-19 |
| 6.23 x 2.96 x 0.33 inches | 6.44 x 2.96 x 0.35 inches |
| 6.70 ounces | 6.77 ounces |
| Cosmic Purple, Moonlight White, Nebula Purple, Neptune Blue and Space Black | Black, Blue, Red and White |
| Glass and Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 227.00 | -- |
| Display / Screen | |
| 6.3 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| IPS LCD | TFT |
| 409 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 665 SM6125 chipset | Samsung Exynos 850 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 3 GB RAM |
| Adreno 610 GPU | Mali-G76 GPU |
| 9.09 | 9.09 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.12 | 9.84 |
| Camera | |
| 48.00 MP + 13.00 MP | 48.00 MP + 13.00 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 | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.44 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Comparison review
The Galaxy A21s has a general score of 77.7, which is just a bit better than the Xiaomi Redmi Note 8's 74.6 overall score. These phones work with the same Android 10 operating system. Even though the Galaxy A21s is a better phone than the Xiaomi Redmi Note 8, we must note that it's also a a bit heavier and just a bit thicker phone.
Xiaomi Redmi Note 8 features a better screen than Galaxy A21s, because although it has a little smaller display, it also counts with a lot better 1080 x 2340 pixels resolution and a much higher display pixels density. The Galaxy A21s features a processing unit that's very similar to the Xiaomi Redmi Note 8 one, they have a 3 GB RAM memory and the same number of cores.
Samsung Galaxy A21s features a way bigger storage capacity for apps and games than Xiaomi Redmi Note 8, and although they both have equal 32 GB internal memory capacity, the Samsung Galaxy A21s also has a slot for SD memory cards that supports up to 512 GB. Xiaomi Redmi Note 8 counts with just a bit better camera than Samsung Galaxy A21s, and although they both have a 0.5 inches back camera sensor and a same resolution back-facing camera, the Xiaomi Redmi Note 8 also has a larger diafragm aperture to take better low-light photography and a way higher 3840x2160 (4K) video definition.
The Galaxy A21s has greater battery lifetime than Xiaomi Redmi Note 8, because it has a 25% bigger battery size.
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