Compare phones
| Global Score | |
| 83 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11 |
| 2021-01-18 | 2021-01-29 |
| 6.37 x 3.04 x 0.36 inches | 5.97 x 2.80 x 0.31 inches |
| 7.02 ounces | 6.03 ounces |
| Daybreak purple and Nightfall black | Gray, Phantom pink, Violet and White |
| Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.5 inches | 6.2 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 396 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.2 |
| Performance | |
| MediaTek Dimensity 800U chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A76 and ARM Cortex-A55, 64-bit, 7 nm (Octa-Core 2400 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G57 MC3 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 | |
| 48.00 MP + 13.00 MP | 12.00 MP + 10.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (120 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.55 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, 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 |
| 10.7 | 10.7 |
| Battery Life | |
| 5000mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.8 | 5.92 |
| Other Features | |
| Bluetooth 5.1 | 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 an overall score of 91.8, which is better than the Xiaomi Redmi Note 9T's score of 83. Both of these devices come with Android operating system, but the Samsung Galaxy S21 has a more recent 11 version while Xiaomi Redmi Note 9T has Android 10, offering lots of additional features and performance tweaks. Even though the Samsung Galaxy S21 and Xiaomi Redmi Note 9T were released only a few months apart, the Samsung Galaxy S21 is somewhat thinner and somewhat lighter.
Galaxy S21 counts with a little better performance than Xiaomi Redmi Note 9T, and although they both have 8 CPU cores, the Galaxy S21 also has 4 GB more RAM memory. The Galaxy S21 counts with a sharper screen than Xiaomi Redmi Note 9T, because although it has a little smaller screen, it also counts with a slightly higher 1080 x 2400 pixels resolution and a bit higher screen pixel density.
Xiaomi Redmi Note 9T takes a little bit better photos and videos than Samsung Galaxy S21, because although it has a smaller sensor, and they both have a F1.8 diafragm aperture and the same video resolution, the Xiaomi Redmi Note 9T also counts with a camera with much more mega-pixels and faster 30 frames per second video frame rates.
The Xiaomi Redmi Note 9T features more storage for games and applications than Samsung Galaxy S21, because although it has just 64 GB internal storage capacity, it also counts with a SD memory slot that admits a maximum of 512 GB. Xiaomi Redmi Note 9T counts with improved battery life than Samsung Galaxy S21, because it has a 25% bigger battery size.
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