| Global Score | |
| 81.5 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 11, 10 |
| 2021-11-11 | 2020-03-23 |
| 6.44 x 2.98 x 0.34 inches | 6.26 x 2.96 x 0.35 inches |
| 6.88 ounces | 6.63 ounces |
| Cool Blue, POCO Yellow and Power Black | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.6 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 399 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| MediaTek Dimensity 810 5G MT6833 (6 nm) chipset | Exynos 9611 chipset |
| Cortex-A76, 64-bit (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 MC2 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 13.02 | 11.74 |
| Camera | |
| 50.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (60 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.67 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 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 |
Galaxy M21 is just a bit better than the Xiaomi POCO M4 Pro 5G, with an 84.1 score against 81.5. These phones include the same Android 11 operating system. The Galaxy M21 is an older and a bit thicker phone than Xiaomi POCO M4 Pro 5G, but Samsung managed to make it just a little bit lighter anyway.
The Xiaomi POCO M4 Pro 5G has a bit better performance than Samsung Galaxy M21. They have the same number of cores and the same RAM amount. The Galaxy M21 features a little bit better screen than Xiaomi POCO M4 Pro 5G, because although it has a little bit smaller screen and a bit lower resolution of 1080 x 2340 pixels, it also counts with a little bit more pixels per inch of screen.
The Samsung Galaxy M21 has a little bit better camera than Xiaomi POCO M4 Pro 5G, because although it has a worse resolution camera in the back and a tinier aperture, it also counts with a way higher 3840x2160 video quality. The Xiaomi POCO M4 Pro 5G features more memory capacity for games and applications than Samsung Galaxy M21, and although they both have equal internal memory capacity, the Xiaomi POCO M4 Pro 5G also has a slot for external memory cards that supports up to 1 TB.
The Samsung Galaxy M21 has longer battery performance than Xiaomi POCO M4 Pro 5G, because it has a 6000mAh battery size.
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