Compare phones
| Global Score | |
| 71.6 | 76.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 4.4.2, 4.2.1 | Android 10 |
| 0000-00-00 | 2020-06-29 |
| 5.67 x 2.90 x 0.32 inches | 6.61 x 3.02 x 0.32 inches |
| 5.11 ounces | 6.81 ounces |
| Black | Black |
| -- | Plastic and Plastic |
| $ 300.00 | $ 194.00 |
| Display / Screen | |
| 5 inches | 6.5 inches |
| 1080 x 1920 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 441 pixels per inch | 270 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 800 8974-AB chipset | Mediatek Helio P35 chipset |
| Krait 400 (Quad-Core 2360 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 2 GB (933 MHz) RAM | 3 GB RAM |
| Adreno 330 (450 MHz) GPU | PowerVR GE8320 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 7.7 | 9.84 |
| Camera | |
| 13.00 MP + 2.00 MP | 16.00 MP + 13.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| -- | 0.33 inches (1/3.06") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 8.91 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM |
| 4.6 | 6.7 |
| Battery Life | |
| 3050mAh Li-Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy A21 has a global score of 76.1, which is a bit better than the Xiaomi Mi-3's overall score of 71.6. Both phones we compare here come with Android operating system, but the Galaxy A21 has the previous 10 version while Xiaomi Mi-3 has Android 4.4.2 version. The Galaxy A21 construction has the same thickness than Xiaomi Mi-3, but it's extremely heavier.
The Xiaomi Mi-3 features a much better screen than Galaxy A21, because although it has a way smaller screen, it also counts with way more pixels per screen inch and a better 1920 x 1080 pixels resolution. The Samsung Galaxy A21 counts with a much greater storage to store more games and applications than Xiaomi Mi-3, because although it has just 32 GB internal storage capacity, it also counts with a slot for SD memory cards that supports up to 512 GB.
Galaxy A21's CPU is very similar to the processing unit in Xiaomi Mi-3, because although the Galaxy A21 has doesn't have a GPU, it also counts with 1 GB more RAM and 4 more cores. The Samsung Galaxy A21 shoots a bit better photographs and videos than Xiaomi Mi-3, and although they both have the same 1920x1080 (Full HD) video resolution and the same video frame rates, the Samsung Galaxy A21 also has a higher 16 mega-pixels resolution back camera and a larger diafragm aperture to take better low-light photos.
Galaxy A21 has longer battery lifetime than Xiaomi Mi-3, because it has a 4000mAh battery capacity instead of 3050mAh.
Galaxy A21 is not only the best phones of the ones in this comparison, but it's also a bargain compared to the other phones, making it a great choice.
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