Compare phones
| Global Score | |
| 77.7 | 83.3 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 10, 9.0 Pie, 8.0 Oreo |
| 2020-06-19 | 2018-06-05 |
| 6.44 x 2.96 x 0.35 inches | 6.10 x 2.94 x 0.30 inches |
| 6.77 ounces | 6.17 ounces |
| Black, Blue, Red and White | Black, Blue, Gold and White |
| -- | Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.2 inches |
| 1600 x 720 pixels | 2248 x 1080 pixels |
| TFT | AMOLED |
| 270 pixels per inch | 402 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 8.6 |
| Performance | |
| Samsung Exynos 850 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 3 GB RAM | 6 GB RAM |
| Mali-G76 GPU | Adreno 630 GPU |
| 9.09 | 9.63 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 13.3 |
| Camera | |
| 48.00 MP + 13.00 MP | 12.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 56.00mm focal length |
| 0.5 inches (1/2") sensor | 0.39 inches (1/2.55") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.78 | 9.9 |
| 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 HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 3400mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.36 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Xiaomi Mi 8 is a bit better than the Galaxy A21s, with an 83.3 score against 77.7. Both of these devices work with the same Android 10 operating system, so both of them should provide you identical operating system features. The Xiaomi Mi 8 is an a lot older phone than Galaxy A21s, but Xiaomi was able to build it thinner and a bit lighter.
The Xiaomi Mi 8 features a much better screen than Galaxy A21s, because although it has a little smaller screen, it also counts with a much higher 1080 x 2248px resolution and a greater count of pixels per screen inch. The Xiaomi Mi 8 features a bit better performance than Galaxy A21s, and although they both have a Octa-Core processing unit, the Xiaomi Mi 8 also has 3 GB more RAM.
The Samsung Galaxy A21s shoots a little bit better photos and videos than Xiaomi Mi 8, because although it has a tinier aperture, and they both have the same 30 frames per second video frame rate and the same (Full HD) video quality, the Samsung Galaxy A21s also counts with a back-facing camera with a much higher 48 mega pixels resolution and a much bigger sensor shooting much higher quality videos and pictures.
The Xiaomi Mi 8 has a very superior storage capacity for apps and games than Galaxy A21s, because although it has no SD memory slot, it also counts with more internal storage capacity. Samsung Galaxy A21s has a very superior battery duration than Xiaomi Mi 8, because it has a 47 percent larger battery size.
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