Compare phones
| Global Score | |
| 81.1 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11 |
| 2020-05-05 | 2021-01-29 |
| 6.53 x 3.02 x 0.35 inches | 5.97 x 2.80 x 0.31 inches |
| 7.37 ounces | 6.03 ounces |
| Glacier white, Interstellar gray and Tropical green | Gray, Phantom pink, Violet and White |
| Glass (Corning Gorilla Glass 5) and Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 291.00 | $ 722.00 |
| Display / Screen | |
| 6.7 inches | 6.2 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 393 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 618 GPU | Adreno 660 GPU |
| 9.36 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 64.00 MP + 16.00 MP | 12.00 MP + 10.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.59 inches (1/1.7") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.1 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 5020mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.8 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy S21 has a general score of 91.8, which is better than the Xiaomi Redmi Note 9 Pro's 81.1 general score. Both devices in this comparison use Android operating system, but the Samsung Galaxy S21 has the newer 11 version while Xiaomi Redmi Note 9 Pro has Android 10. Samsung Galaxy S21's body is somewhat thinner and lighter than the Xiaomi Redmi Note 9 Pro, even when both were only released with a couple months difference.
The Samsung Galaxy S21 features just a little better processing power than Xiaomi Redmi Note 9 Pro, and although they both have 8 processing cores, the Samsung Galaxy S21 also has 2 GB more RAM memory. The Galaxy S21 has a much better looking screen than Xiaomi Redmi Note 9 Pro, because although it has a quite smaller screen, and they both have the same 1080 x 2400 resolution, the Galaxy S21 also counts with a bit more pixels per inch in the display.
The Xiaomi Redmi Note 9 Pro features a better memory to install games and applications than Samsung Galaxy S21, because although it has only 64 GB internal storage capacity, it also counts with a SD memory slot that holds a maximum of 512 GB. The Xiaomi Redmi Note 9 Pro counts with better battery life than Galaxy S21, because it has 5020mAh of battery capacity against 4000mAh.
Xiaomi Redmi Note 9 Pro counts with a superior camera than Samsung Galaxy S21, because although it has a smaller diafragm aperture which is not good for low light captures and video, and they both have the same 3840x2160 video definition, the Xiaomi Redmi Note 9 Pro also counts with faster video frame rate, a larger sensor taking higher quality pictures and videos and a camera with a much better resolution.
Although Samsung Galaxy S21 is a better device, it costs a lot more money than Xiaomi Redmi Note 9 Pro, and it doesn't have such a good quality/price relation as the Xiaomi Redmi Note 9 Pro. So if you need that extra features, you can buy the Samsung Galaxy S21, but if you don't you can save some money and buy the Xiaomi Redmi Note 9 Pro, letting go some specifications.
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