Compare phones
| Global Score | |
| 71.8 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 6.0 Marshmallow | Android 11 |
| 2017-02-14 | 2021-01-29 |
| 5.94 x 2.99 x 0.33 inches | 5.97 x 2.80 x 0.31 inches |
| 5.82 ounces | 6.03 ounces |
| 16 777 216 | Gray, Phantom pink, Violet and White |
| Metal | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| $ 145.00 | $ 722.00 |
| Display / Screen | |
| 5.5 inches | 6.2 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 401 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 8 GB RAM |
| Adreno 506 GPU | Adreno 660 GPU |
| 9.09 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 8.12 | 10.1 |
| Camera | |
| 13.00 MP + 5.00 MP | 12.00 MP + 10.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| -- | 0.57 inches (1/1.76") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (960 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 | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 4100mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6 | 5.92 |
| 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, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy S21 is a lot better than Xiaomi Redmi Note 4X, getting a score of 91.8 against 71.8. These phones come with Android OS (Operating System), but the Samsung Galaxy S21 has 11 version and Xiaomi Redmi Note 4X has Android 6.0 Marshmallow. The Samsung Galaxy S21 is a way newer and just a little bit thinner device than the Xiaomi Redmi Note 4X, but it is also just a little bit heavier.
The Galaxy S21 has just a bit better performance than Xiaomi Redmi Note 4X, and although they both have 8 CPU cores, the Galaxy S21 also has a greater amount of RAM. Galaxy S21 has a much better looking screen than Xiaomi Redmi Note 4X, because it has a just a bit higher pixels density, a little larger display and a quite better resolution of 1080 x 2400px.
Galaxy S21 has a way bigger storage for applications and games than Xiaomi Redmi Note 4X, because although it has no SD extension slot, it also counts with 96 GB more internal memory capacity. Galaxy S21 has a superior camera than Xiaomi Redmi Note 4X, because although it has a camera in the back with lesser megapixels resolution, it also counts with a lot better video definition and a bigger aperture to take better images in low light situations.
The Xiaomi Redmi Note 4X counts with a little longer battery performance than Samsung Galaxy S21, because it has 4100mAh of battery capacity.
Although Galaxy S21 is a better device, it costs a lot more money than the Xiaomi Redmi Note 4X, and it doesn't have such a good quality/price relation as Xiaomi Redmi Note 4X. If you prefer to save some money, you can get Xiaomi Redmi Note 4X, and give up a few features and specs, but you will get the most out of your money.
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