Compare phones
| Global Score | |
| 84.1 | 89 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-08-10 |
| 6.26 x 2.96 x 0.35 inches | 6.40 x 2.97 x 0.31 inches |
| 6.63 ounces | 7.94 ounces |
| Midnight blue and Raven black | Ceramic Black, Ceramic White and Shadow Gray |
| Plastic and Plastic | Aluminum and Ceramic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.7 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 393 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 888+ SM8350-AC chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680 Prime, 64-bit, 5 nm (Octa-Core 3000 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.27 | 9.72 |
| 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 + 20.00 MP | 108.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | 24.00mm focal length |
| 0.5 inches (1/2") sensor | 0.75 inches (1/1.33") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (480 fps) (Full HD) slow motion video |
| 11.55 | 13.75 |
| 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) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4500mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Xiaomi Mi Mix 4 is a bit better than Galaxy M21, getting an 89 score against 84.1. Both of these devices have the same Android 11 OS (operating system). Xiaomi Mi Mix 4's construction is newer and somewhat thinner than the Galaxy M21's, but it's heavier. Samsung Galaxy M21 has just a bit better looking display than Xiaomi Mi Mix 4, because although it has a little bit worse resolution of 1080 x 2340px and a bit smaller screen, it also counts with a just a bit greater display pixel density.
Xiaomi Mi Mix 4 features a bit faster processor than Samsung Galaxy M21, and although they both have a Octa-Core CPU, the Xiaomi Mi Mix 4 also has more RAM memory. The Xiaomi Mi Mix 4 has a much better camera than Samsung Galaxy M21, because it has a much higher 7680x4320 video quality, a lot larger camera sensor which provides a lot higher image and video quality, a camera with a way better resolution and a larger camera aperture to take better captures and video in low-light environments.
Galaxy M21 has a better storage to install applications and games or saving photos and videos than Xiaomi Mi Mix 4, because although it has 0 less internal memory capacity, it also counts with a slot for an external memory card that allows up to 512 GB. Samsung Galaxy M21 features superior battery performance than Xiaomi Mi Mix 4, because it has a 33 percent greater battery capacity.
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