Compare phones
| Global Score | |
| 76.1 | 76.7 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 11 |
| 2020-06-29 | 2021-05-27 |
| 6.61 x 3.02 x 0.32 inches | 6.23 x 2.96 x 0.33 inches |
| 6.81 ounces | 6.70 ounces |
| Black | Moonlight White, Neptune Blue and Space Black, |
| Plastic and Plastic | Glass and Plastic |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.3 inches |
| 1600 x 720 pixels | 2340 x 1080 pixels |
| IPS LCD | IPS LCD |
| 270 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8.1 |
| Performance | |
| Mediatek Helio P35 chipset | MediaTek Helio G85 MT6769Z chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| PowerVR GE8320 GPU | Mali G52 MC2 GPU |
| 9.27 | 9.09 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 9.84 | 10.02 |
| Camera | |
| 16.00 MP + 13.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 0.33 inches (1/3.06") sensor | 0.5 inches (1/2") 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 |
| 9.35 | 11 |
| 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 HSPA |
| Nano SIM | Nano SIM |
| 6.7 | 6.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| 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 Xiaomi Redmi Note 8 2021 is a bit better than the Galaxy A21, with a 76.7 score against 76.1. Both of these phones use Android OS (Operating System), but the Xiaomi Redmi Note 8 2021 has a newer 11 version while Galaxy A21 has Android 10, providing you some additional features and performance optimizations. Even though Xiaomi Redmi Note 8 2021 is just a bit thicker than the Galaxy A21, it's a little bit lighter and newer.
Xiaomi Redmi Note 8 2021 has a much better looking screen than Galaxy A21, because although it has a bit smaller display, it also counts with way more pixels per inch in the display and a lot higher 1080 x 2340px resolution. The Galaxy A21 features a little better hardware performance than Xiaomi Redmi Note 8 2021, although it has a smaller amount of RAM memory, they both have 8 cores.
Xiaomi Redmi Note 8 2021 counts with a superior camera than Galaxy A21, and although they both have the same (Full HD) video resolution, a F1.8 diafragm aperture and the same video frame rates, the Xiaomi Redmi Note 8 2021 also has a lot larger sensor capturing much better quality photos and videos and a camera with much more megapixels.
The Xiaomi Redmi Note 8 2021 has a bit bigger memory capacity for games and applications than Samsung Galaxy A21, because although it has an external memory card slot that supports up to 128 GB against 512 GB, it also counts with more internal memory. Xiaomi Redmi Note 8 2021's battery performance is very similar to the battery lifetime in Samsung Galaxy A21.
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