Compare phones
| Global Score | |
| 71.8 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 6.0 Marshmallow | Android 10 |
| 2017-02-14 | 2020-06-19 |
| 5.94 x 2.99 x 0.33 inches | 6.44 x 2.96 x 0.35 inches |
| 5.82 ounces | 6.77 ounces |
| 16 777 216 | Black, Blue, Red and White |
| Metal | -- |
| $ 145.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | TFT |
| 401 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 3 GB RAM |
| Adreno 506 GPU | Mali-G76 GPU |
| 9.09 | 9.09 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.12 | 9.84 |
| Camera | |
| 13.00 MP + 5.00 MP | 48.00 MP + 13.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 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 | -- |
| 9.02 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 4100mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Comparison review
The Galaxy A21s is a bit better than the Xiaomi Redmi Note 4X, having a 77.7 score against 71.8. Even though Galaxy A21s is much newer than the Xiaomi Redmi Note 4X, it is somewhat heavier and just a bit thicker. These phones include Android OS (Operating System), but Galaxy A21s has older 10 version and Xiaomi Redmi Note 4X has Android 6.0 Marshmallow.
The Xiaomi Redmi Note 4X counts with a better display than Galaxy A21s, because although it has a quite smaller display, it also counts with a higher resolution of 1080 x 1920px and a greater pixel number in each display inch. Samsung Galaxy A21s and Xiaomi Redmi Note 4X feature quite similar processing units, both of them have 3 GB of RAM memory and 8 CPU cores.
The Galaxy A21s counts with a much better camera than Xiaomi Redmi Note 4X, and although they both have the same 30 fps video frame rate, a F2 camera aperture and the same 1920x1080 video resolution, the Galaxy A21s also has a back camera with a lot higher resolution. Galaxy A21s features a way bigger memory capacity to install games and applications than Xiaomi Redmi Note 4X, and although they both have equal internal storage capacity, the Galaxy A21s also has a SD extension slot that allows a maximum of 512 GB.
The Samsung Galaxy A21s has better battery life than Xiaomi Redmi Note 4X, because it has 5000mAh of battery capacity.
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