Compare phones
| Global Score | |
| 84.1 | 78.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 10 |
| 2020-03-23 | 2021-01-18 |
| 6.26 x 2.96 x 0.35 inches | 6.39 x 3.04 x 0.38 inches |
| 6.63 ounces | 6.98 ounces |
| Midnight blue and Raven black | Carbon gray, Ocean green, Sunrise orange and Twilight blue |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 396 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 662 SM6115 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Adreno 610 GPU |
| 9.27 | 9.09 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 11.74 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 8.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 11.55 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M21 has a global score of 84.1, which is a bit better than the Xiaomi Redmi 9T's 78.2 general score. Both phones in this review use Android OS (Operating System), but Galaxy M21 has newer 11 version while Xiaomi Redmi 9T has Android 10, giving you some extra features. The Galaxy M21 is an older phone than Xiaomi Redmi 9T, but Samsung made it just a bit thinner and just a little bit lighter.
Galaxy M21 has a little better hardware performance than Xiaomi Redmi 9T. Both of them have 4 GB of RAM and the same number of cores. The Samsung Galaxy M21 features just a bit better looking screen than Xiaomi Redmi 9T, because although it has a little smaller screen, and they both have the same exact 1080 x 2340px resolution, the Samsung Galaxy M21 also counts with a just a bit greater pixels number per screen inch.
The Galaxy M21 features a slightly better camera than Xiaomi Redmi 9T, because although it has a tinier diafragm aperture which is not good for low light images and video, and they both have a 48 mega-pixels resolution camera in the back and a same size camera sensor, the Galaxy M21 also counts with a lot higher 3840x2160 video quality.
The Xiaomi Redmi 9T counts with as much memory capacity to store more apps and games as the Galaxy M21, they have the same 64 GB internal storage and an external SD slot that allows a maximum of 512 GB. Xiaomi Redmi 9T features a battery lifetime that is just as good as the Samsung Galaxy M21 one.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.