Compare phones
| Global Score | |
| 75.8 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2017-01-13 | 2020-06-19 |
| 6.17 x 3.06 x 0.31 inches | 6.44 x 2.96 x 0.35 inches |
| 6.56 ounces | 6.77 ounces |
| Black sky, Blue mist, Gold sand and Peach cloud | Black, Blue, Red and White |
| Aluminum and Glass (Corning Gorilla Glass 4) | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.7 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 386 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.9 | 7.2 |
| Performance | |
| Samsung Exynos 7 Octa 7880 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1900 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 3 GB RAM |
| Mali-T830 MP3 GPU | Mali-G76 GPU |
| 9 | 9.09 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 9.84 |
| Camera | |
| 16.00 MP + 16.00 MP | 48.00 MP + 13.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.24 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3600mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.6 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
Galaxy A21s has an overall score of 77.7, which is a bit better than the Galaxy A7 (2017)'s score of 75.8. The Galaxy A21s is a incredibly newer phone than the Galaxy A7 (2017), although it's just a little heavier and somewhat thicker. The Galaxy A7 (2017) has a little more vivid display than Galaxy A21s, because although it has a quite smaller screen, it also counts with a better 1080 x 1920 resolution and a greater pixel density.
The Samsung Galaxy A21s has a greater memory capacity to install applications and games than Samsung Galaxy A7 (2017), and although they both have exactly the same internal memory, the Samsung Galaxy A21s also has a slot for an SD memory card that admits a maximum of 512 GB. The Samsung Galaxy A21s counts with a bit better performance than Samsung Galaxy A7 (2017). They have the same RAM memory amount and 8 CPU cores.
The Galaxy A21s counts with a much better battery duration than Samsung Galaxy A7 (2017), because it has a 39% bigger battery size. The Galaxy A21s captures much clearer videos and photos than Samsung Galaxy A7 (2017), because although it has a tinier diafragm aperture, and they both have the same video frame rates and the same 1920x1080 (Full HD) video definition, the Galaxy A21s also counts with a camera in the back with a lot higher 48 megapixels resolution.
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