Compare phones
| Global Score | |
| 74.9 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo | Android 10 |
| 2018-07-19 | 2020-06-19 |
| 6.94 x 3.44 x 0.31 inches | 6.44 x 2.96 x 0.35 inches |
| 7.80 ounces | 6.77 ounces |
| 16 777 216 | Black, Blue, Red and White |
| Aluminum | -- |
| Display / Screen | |
| 6.9 inches | 6.5 inches |
| 2160 x 1080 pixels | 1600 x 720 pixels |
| IPS LCD | TFT |
| 350 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.7 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 636 SDM636 chipset | Samsung Exynos 850 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 509 GPU | Mali-G76 GPU |
| 8.91 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 9.84 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.39 inches (1/2.55") 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 (120 fps) (HD) slow motion video | -- |
| 9.68 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 5500mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.2 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
Galaxy A21s is just a bit better than the Xiaomi Mi Max 3, with a general score of 77.7 against 74.9. Galaxy A21s's design is newer and lighter, but also somewhat thicker than Xiaomi Mi Max 3. Both of these phones come with Android OS (operating system), but Galaxy A21s has the previous 10 version while Xiaomi Mi Max 3 has Android 8.1 Oreo.
The Galaxy A21s counts with just a bit better processing power than Xiaomi Mi Max 3, although it has a smaller amount of RAM memory, they both have the same number of cores. Xiaomi Mi Max 3 counts with a little bit better looking display than Samsung Galaxy A21s, because it has a greater pixel count per inch of screen, a quite bigger screen and a much better resolution of 1080 x 2160.
The Galaxy A21s has a superior camera than Xiaomi Mi Max 3, because although it has a smaller aperture which is not nice for low-light images and videos, and they both have the same video definition and the same 30 fps video frame rate, the Galaxy A21s also counts with a camera with a much higher resolution and a way bigger back-facing camera sensor taking much higher quality pictures and videos.
Xiaomi Mi Max 3 features a bit bigger storage for applications, games, photos and videos than Galaxy A21s, because although it has a SD memory card expansion slot that allows 256 GB smaller, it also counts with 64 GB internal memory capacity. The Xiaomi Mi Max 3 features just a bit better battery duration than Samsung Galaxy A21s, because it has a 10% larger battery size.
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