Compare phones
| Global Score | |
| 75 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 9.0 Pie, 8.1 Oreo, 8.0 Oreo, 7.1 Nougat | Android 11, 10 |
| 2017-09-12 | 2020-03-23 |
| 6.12 x 2.98 x 0.29 inches | 6.26 x 2.96 x 0.35 inches |
| 5.82 ounces | 6.63 ounces |
| Black, Gold and Pink | Midnight blue and Raven black |
| Metal | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| 450 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 506 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 11.74 |
| Camera | |
| 12.00 MP + 5.00 MP | 48.00 MP + 20.00 MP |
| f/2.20 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.35 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3080mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 has an overall score of 84.1, which is much better than the Xiaomi Mi A1's score of 75. These phones have Android OS, but Galaxy M21 has older 11 version and Xiaomi Mi A1 has Android 9.0 Pie. The Galaxy M21 body is a lot newer than the Xiaomi Mi A1's, although it's thicker and heavier.
Galaxy M21 features a screen that's just as good as the display in Xiaomi Mi A1, because although the Galaxy M21 has a little opaque screen, it also counts with a slightly better 1080 x 2340 resolution, a bigger display and a bit more pixels per inch in the screen. Samsung Galaxy M21 counts with a little bit better storage to install applications and games or saving photos and videos than Xiaomi Mi A1, and although they both have the same internal memory, the Samsung Galaxy M21 also has a SD memory slot that allows up to 512 GB.
Galaxy M21 has a bit better CPU than Xiaomi Mi A1. Both have 4 GB of RAM and 8 CPU cores. Samsung Galaxy M21 counts with a much longer battery life than Xiaomi Mi A1, because it has 6000mAh of battery capacity against 3080mAh. The Galaxy M21 features a way better camera than Xiaomi Mi A1, and although they both have the same video quality and the same 30 fps video frame rates, the Galaxy M21 also has a back facing camera with a much better 48 mega pixels resolution and a larger aperture to capture better photos and video in low-light environments.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.