Compare phones
| Global Score | |
| 83 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11, 10 |
| 2021-01-18 | 2020-03-23 |
| 6.37 x 3.04 x 0.36 inches | 6.26 x 2.96 x 0.35 inches |
| 7.02 ounces | 6.63 ounces |
| Daybreak purple and Nightfall black | Midnight blue and Raven black |
| Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 396 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| MediaTek Dimensity 800U chipset | Exynos 9611 chipset |
| ARM Cortex-A76 and ARM Cortex-A55, 64-bit, 7 nm (Octa-Core 2400 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G57 MC3 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.27 |
| 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 + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 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 | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (120 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.55 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, 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 |
| 10.7 | 6.7 |
| Battery Life | |
| 5000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 is just a bit better than the Xiaomi Redmi Note 9T, getting an 84.1 score against 83. Even though the Galaxy M21 is older than Xiaomi Redmi Note 9T, it's design is a little thinner and just a little lighter. Both of these phones include Android OS, but the Galaxy M21 has a more recent 11 version and Xiaomi Redmi Note 9T has Android 10 version.
The Galaxy M21 has a slightly better looking screen than Xiaomi Redmi Note 9T, because although it has a little bit smaller screen, and they both have an equal 1080 x 2340 resolution, the Galaxy M21 also counts with a little more pixels per screen inch. Xiaomi Redmi Note 9T counts with a little faster processing unit than Samsung Galaxy M21. They have the same number of cores and 4 GB of RAM.
Galaxy M21 has as much storage capacity for games and applications as the Xiaomi Redmi Note 9T one, they have a SD extension slot that supports a maximum of 512 GB and exactly the same internal storage. The Xiaomi Redmi Note 9T and the Galaxy M21 have really similar cameras, and although the Galaxy M21 has a smaller camera aperture which is not good for capturing images and video in low-light environments, they both have the same 3840x2160 (4K) video quality, the same 30 fps video frame rate, the same sensor size and a 48 megapixels camera.
The Galaxy M21 has superior battery life than Xiaomi Redmi Note 9T, because it has a 20% more battery capacity.
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