Compare phones
| Global Score | |
| 78.8 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 12 | Android 10 |
| 2021-12-28 | 2020-06-19 |
| 6.01 x 2.75 x 0.32 inches | 6.44 x 2.96 x 0.35 inches |
| 6.31 ounces | 6.77 ounces |
| Black, Blue, Green and Pink | Black, Blue, Red and White |
| Aluminum and Glass | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.3 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| AMOLED | TFT |
| 418 pixels per inch | 270 pixels per inch |
| 1100 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.9 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 8 Gen1 SM8450 (4 nm) chipset | Samsung Exynos 850 chipset |
| processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 3 GB RAM |
| Adreno 730 GPU | Mali-G76 GPU |
| 6.21 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 9.84 |
| Camera | |
| 50.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | -- |
| 12.54 | 10.78 |
| 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 | |
| 4500mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.32 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Comparison review
The Xiaomi 12 has an overall score of 78.8, which is just a bit better than the Samsung Galaxy A21s's global score of 77.7. Both phones in this review work with Android OS, but the Xiaomi 12 has a newer 12 version while Samsung Galaxy A21s has Android 10. The Xiaomi 12 is a newer cellphone, and it's also just a little thinner and a bit lighter than the Samsung Galaxy A21s.
Galaxy A21s has a much powerful CPU than Xiaomi 12, although it has lesser RAM memory, they both have 8 processing cores. The Xiaomi 12 has a lot better display than Samsung Galaxy A21s, because although it has a quite smaller display, it also counts with a lot better 1080 x 2400px resolution and a much better pixel quantity per screen inch.
Xiaomi 12 shoots better videos and photos than Galaxy A21s, because it has a more mega-pixels camera in the back, a much better 7680x4320 video definition, a way larger sensor which gives a much better photo and video quality and a larger camera aperture to capture better low-light photos and video.
The Xiaomi 12 counts with just a bit more memory for applications and games than Samsung Galaxy A21s, because although it has no SD memory slot, it also counts with more internal memory. Galaxy A21s features a little better battery life than Xiaomi 12, because it has a 5000mAh battery size instead of 4500mAh.
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