Compare phones
| Global Score | |
| 90.8 | 76.7 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11 |
| 2020-04-29 | 2021-05-27 |
| 6.26 x 2.90 x 0.34 inches | 6.23 x 2.96 x 0.33 inches |
| 6.60 ounces | 6.70 ounces |
| Prism cube black | Moonlight White, Neptune Blue and Space Black, |
| Aluminum and Plastic | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.3 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| Samsung Exynos 980 chipset | MediaTek Helio G85 MT6769Z chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Mali-G76 MP5 GPU | Mali G52 MC2 GPU |
| 9.27 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 15.38 | 10.02 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 13.00 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 | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.55 | 11 |
| 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 HSPA |
| Nano SIM | Nano SIM |
| 10.7 | 6.6 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 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 Samsung Galaxy A51 5G has a general score of 90.8, which is much better than the Xiaomi Redmi Note 8 2021's 76.7 score. Both devices we are comparing here come with the same Android 11 OS (Operating System), so you shouldn't see any differences regarding that. The Samsung Galaxy A51 5G design is a bit lighter than the Xiaomi Redmi Note 8 2021, although it is just a little bit thicker and was released about 13 months before.
Galaxy A51 5G features a little bit better processing power than Xiaomi Redmi Note 8 2021, and although they both have a Octa-Core processor, the Galaxy A51 5G also has 2 GB more RAM memory. Xiaomi Redmi Note 8 2021 features a display that is very similar to the display in Galaxy A51 5G, because although the Xiaomi Redmi Note 8 2021 has a bit smaller display and a bit worse 1080 x 2340 pixels resolution, it also counts with a just a bit higher quantity of pixels in each inch in the screen.
The Samsung Galaxy A51 5G counts with a much bigger storage capacity to install games and applications than Xiaomi Redmi Note 8 2021, because it has 64 GB more internal storage capacity and a SD memory card expansion slot that holds up to 1000 GB. The Galaxy A51 5G has a bit longer battery lifetime than Xiaomi Redmi Note 8 2021, because it has a 13 percent bigger battery size.
Galaxy A51 5G captures clearer photos and videos than Xiaomi Redmi Note 8 2021, because although it has a tinier aperture which is not recommended for low-light photography and videos, and they both have the same resolution back-facing camera and the same back camera sensor size, the Galaxy A51 5G also counts with a much better (4K) video quality.
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