Compare phones
| Global Score | |
| 72.5 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2018-07-13 | 2020-06-19 |
| 6.03 x 3.00 x 0.34 inches | 6.44 x 2.96 x 0.35 inches |
| 6.38 ounces | 6.77 ounces |
| Black | Black, Blue, Red and White |
| Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 230.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1280 x 720 pixels (HD) | 1600 x 720 pixels |
| TFT | TFT |
| 267 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 7.2 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 2 GB RAM | 3 GB RAM |
| Mali-T830 MP1 GPU | Mali-G76 GPU |
| 8.73 | 9.09 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.44 | 9.84 |
| Camera | |
| 13.00 MP + 13.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 28.00mm focal length | 26.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.13 | 10.78 |
| 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 | |
| 3300mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Comparison review
Galaxy A21s is a little bit better than Galaxy J7 (2018), getting a global score of 77.7 against 72.5. Galaxy A21s is a newer cellphone than the Galaxy J7 (2018), but it's a little bit thicker and just a bit heavier. The Galaxy A21s features just a bit better screen than Galaxy J7 (2018), because it has a bit higher pixel density, a bigger screen and a slightly higher resolution of 720 x 1600 pixels.
The Samsung Galaxy A21s features just a bit more memory to install applications and games or saving photos and videos than Samsung Galaxy J7 (2018), and although they both have the same internal memory capacity, the Samsung Galaxy A21s also has a SD extension slot that supports a maximum of 512 GB.
Galaxy A21s counts with a little faster CPU than Samsung Galaxy J7 (2018), and although they both have a Octa-Core processor, the Galaxy A21s also has 1 GB more RAM. The Samsung Galaxy A21s counts with a very superior battery lifetime than Galaxy J7 (2018), because it has a 5000mAh battery size. The Galaxy A21s shoots much better pictures and videos than Galaxy J7 (2018), because although it has a smaller diafragm aperture which is not favorable for taking pictures in low light situations, and they both have the same 30 frames per second video frame rates and the same 1920x1080 (Full HD) video resolution, the Galaxy A21s also counts with a back-facing camera with a way better resolution and a lot larger camera sensor.
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