Compare phones
| Global Score | |
| 84.1 | 81 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 12 |
| 2020-03-23 | -- |
| 6.26 x 2.96 x 0.35 inches | -- |
| 6.63 ounces | -- |
| Midnight blue and Raven black | Black and White |
| Plastic and Plastic | Aluminum and Ceramic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.7 inches |
| 2340 x 1080 pixels | 3200 x 1440 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 524 pixels per inch |
| 420 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.7 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 8+ Gen 1 SM8450 (4 nm) chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 730 GPU |
| 9.27 | 6.21 |
| Storage | |
| 64 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 13.3 |
| Camera | |
| 48.00 MP + 20.00 MP | 50.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | 24.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") 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 (1920 fps) (Full HD) slow motion video |
| 11.55 | 12.32 |
| 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 |
| 6.7 | 10.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4800mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 6.64 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Galaxy M21 has a score of 84.1, which is a bit better than the Xiaomi 12S Ultra's overall score of 81. Both of these devices work with Android operating system, but the Galaxy M21 has 11 version and Xiaomi 12S Ultra has Android 12. The Xiaomi 12S Ultra features a brighter display than Galaxy M21, because it has much more brightness, a bit bigger display, a better amount of pixels per inch in the display and a better resolution of 1440 x 3200.
The Samsung Galaxy M21 features a much faster processor than Xiaomi 12S Ultra, although it has lesser RAM, they both have a Octa-Core processing unit. Xiaomi 12S Ultra counts with a slightly better camera than Galaxy M21, and although they both have a F2 diafragm aperture and a 0.5 inches camera sensor, the Xiaomi 12S Ultra also has a much higher video resolution and a more mega-pixels back camera.
The Xiaomi 12S Ultra features a bigger memory for applications, games, photos and videos than Galaxy M21, because although it has no slot for SD memory cards, it also counts with 192 GB more internal memory. Galaxy M21 counts with better battery lifetime than Xiaomi 12S Ultra, because it has a 25 percent greater battery capacity.
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