Compare phones
| Global Score | |
| 74.7 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10, 9.0 Pie | Android 10 |
| 2019-04-10 | 2020-06-29 |
| 6.24 x 2.94 x 0.31 inches | 6.61 x 3.02 x 0.32 inches |
| 5.96 ounces | 6.81 ounces |
| Black,Deep blue and Red | Black |
| Plastic | Plastic and Plastic |
| $ 166.00 | $ 194.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 1560 x 720 pixels | 1600 x 720 pixels |
| Super AMOLED | IPS LCD |
| 268 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.2 | 7.3 |
| Performance | |
| Samsung Exynos 7884 chipset | Mediatek Helio P35 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 3 GB RAM |
| Mali-G71 MP2 GPU | PowerVR GE8320 GPU |
| 8.91 | 9.27 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.84 | 9.84 |
| Camera | |
| 13.00 MP + 8.00 MP | 16.00 MP + 13.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 27.00mm focal length | -- |
| 0.32 inches (1/3.1") sensor | 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 |
| 9.02 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy A21 is just a bit better than Galaxy A20, getting a 76.1 score against 74.7. Even though Galaxy A21 is newer than the Galaxy A20, it's just a bit thicker and heavier. Both phones in this review work with Android OS (operating system), but the Galaxy A21 has the previous 10 version and Galaxy A20 has Android 11 version.
Samsung Galaxy A21 has a slightly better looking screen than Galaxy A20, because it has a quite larger screen, a quite better quantity of pixels per inch in the display and a bit higher resolution of 720 x 1600px. Galaxy A21 counts with as much storage capacity to store more apps and games as the Galaxy A20 one, both of them have exactly the same internal storage and a slot for an external memory card that admits a maximum of 512 GB.
Samsung Galaxy A21 counts with a bit faster processing unit than Galaxy A20. Both have 8 processing cores and 3 GB of RAM memory. The Galaxy A21 counts with just a bit better camera than Galaxy A20, and although they both have the same video frame rates and the same 1920x1080 (Full HD) video definition, the Galaxy A21 also has a larger back camera sensor taking better quality videos and photographs, a bigger diafragm aperture to take better images and video in low-light environments and a camera with a higher 16 MP resolution.
Samsung Galaxy A21 and Samsung Galaxy A20 both count with quite similar battery durations.
Although Galaxy A21 is a better device, it costs more than the Galaxy A20, and it doesn't have such a good relation between it's price and quality as Galaxy A20. So if you want that extra specs, you can buy Galaxy A21, but if you don't you can save a couple dollars and buy the Galaxy A20, giving up a couple features and specs.
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