Compare phones
| Global Score | |
| 76.7 | 85.5 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 11, 10 |
| 2021-05-27 | 2019-12-27 |
| 6.23 x 2.96 x 0.33 inches | 6.24 x 2.90 x 0.31 inches |
| 6.70 ounces | 6.07 ounces |
| Moonlight White, Neptune Blue and Space Black, | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Glass and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 6.3 inches | 6.5 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 409 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Samsung Exynos 9611 chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali G52 MC2 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.02 | 14.14 |
| Camera | |
| 48.00 MP + 13.00 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 |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 11 | 11.55 |
| 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, Dual 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
Galaxy A51 is better than Xiaomi Redmi Note 8 2021, with an 85.5 score against 76.7. Both phones we are comparing here have the same Android 11 OS. Galaxy A51 is an older device than the Xiaomi Redmi Note 8 2021, but it is just a bit thinner and just a bit lighter anyway. Samsung Galaxy A51 and Xiaomi Redmi Note 8 2021 have very similar screens, because although the Samsung Galaxy A51 has a just a bit inferior pixel count in each inch in the screen, it also counts with a quite larger display and a slightly better 1080 x 2400 pixels resolution.
Samsung Galaxy A51 has a superior storage for games and applications than Xiaomi Redmi Note 8 2021, because it has more internal storage and an external SD slot that admits a maximum of 512 GB. The Galaxy A51 counts with a bit better processor than Xiaomi Redmi Note 8 2021. Both have the same RAM memory amount and a Octa-Core processor.
Galaxy A51 features a battery life that's very similar to the battery life in Xiaomi Redmi Note 8 2021. Samsung Galaxy A51 captures just a bit better pictures and videos than Xiaomi Redmi Note 8 2021, because although it has a tinier aperture, and they both have a 0.5 inches sensor and a same resolution camera, the Samsung Galaxy A51 also counts with a lot better video resolution.
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