Compare phones
| Global Score | |
| 76.7 | 76.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 10 |
| 2021-05-27 | 2020-06-29 |
| 6.23 x 2.96 x 0.33 inches | 6.61 x 3.02 x 0.32 inches |
| 6.70 ounces | 6.81 ounces |
| Moonlight White, Neptune Blue and Space Black, | Black |
| Glass and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.3 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 409 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Mediatek Helio P35 chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Mali G52 MC2 GPU | PowerVR GE8320 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.02 | 9.84 |
| Camera | |
| 48.00 MP + 13.00 MP | 16.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 0.5 inches (1/2") sensor | 0.33 inches (1/3.06") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | -- |
| 11 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Xiaomi Redmi Note 8 2021 is a bit better than Galaxy A21, with a general score of 76.7 against 76.1. Xiaomi Redmi Note 8 2021's body is newer and just a little lighter than Galaxy A21's, but it's also just a bit thicker. Both of these devices come with Android OS (Operating System), but Xiaomi Redmi Note 8 2021 has 11 version and Galaxy A21 has Android 10.
The Xiaomi Redmi Note 8 2021 counts with a brighter display than Galaxy A21, because although it has a quite smaller screen, it also counts with a way better resolution of 1080 x 2340px and a much higher screen pixel density. The Galaxy A21 has just a bit better performance than Xiaomi Redmi Note 8 2021, although it has a smaller amount of RAM, they both have the same number of cores.
Xiaomi Redmi Note 8 2021 captures better videos and photos than Galaxy A21, and although they both have the same 30 frames per second video frame rates, the same camera aperture and the same video resolution, the Xiaomi Redmi Note 8 2021 also has a lot higher resolution camera and a way bigger back-facing camera sensor which gives a lot higher image and video quality.
Xiaomi Redmi Note 8 2021 has a little bit better memory for apps and games than Galaxy A21, because although it has a slot for SD memory cards that supports a maximum of 128 GB against 512 GB, it also counts with 64 GB internal storage capacity. The Samsung Galaxy A21 features a battery lifetime that's just as good as the Xiaomi Redmi Note 8 2021 one.
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