| Global Score | |
| 76.1 | 78.8 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 12 |
| 2020-06-29 | 2021-12-28 |
| 6.61 x 3.02 x 0.32 inches | 6.01 x 2.75 x 0.32 inches |
| 6.81 ounces | 6.31 ounces |
| Black | Black, Blue, Green and Pink |
| Plastic and Plastic | Aluminum and Glass |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.3 inches |
| 1600 x 720 pixels | 2400 x 1080 pixels |
| IPS LCD | AMOLED |
| 270 pixels per inch | 418 pixels per inch |
| -- | 1100 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 8.9 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 8 Gen1 SM8450 (4 nm) chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | processor |
| 3 GB RAM | 8 GB RAM |
| PowerVR GE8320 GPU | Adreno 730 GPU |
| 9.27 | 6.21 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 10.1 |
| Camera | |
| 16.00 MP + 13.00 MP | 50.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| -- | 26.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.64 inches (1/1.56") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 9.35 | 12.54 |
| 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 | Nano SIM, Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
The Xiaomi 12 is a bit better than the Samsung Galaxy A21, getting a 78.8 score against 76.1. Xiaomi 12's design has the same thickness than the Samsung Galaxy A21, but it's a little lighter. Both of these phones have Android OS (Operating System), but Xiaomi 12 has a more recent 12 version while Samsung Galaxy A21 has Android 10 version, so it provides a couple additional features and improved performance.
The Xiaomi 12 counts with a lot better looking screen than Galaxy A21, because although it has a little bit smaller display, it also counts with a much better 1080 x 2400 resolution and a lot more pixels per inch in the display. Galaxy A21 has a lot better performance than Xiaomi 12, although it has a lower amount of RAM, they both have 8 processing cores.
The Xiaomi 12 counts with a way better camera than Galaxy A21, because although it has a smaller diafragm aperture which is not so good for capturing pictures or videos in poorly lited environments, it also counts with a way better video resolution, a much larger camera sensor shooting way higher quality photos and a way better resolution back camera.
Xiaomi 12 features a little bit better storage capacity for applications, games, photos and videos than Samsung Galaxy A21, because although it has no slot for external memory cards, it also counts with 96 GB more internal storage capacity. Xiaomi 12 has a bit better battery duration than Samsung Galaxy A21, because it has a 13% bigger battery capacity.
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