Compare phones
| Global Score | |
| 77.7 | 79.2 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | -- |
| 2020-06-19 | 2018-01-06 |
| 6.44 x 2.96 x 0.35 inches | 5.87 x 2.78 x 0.33 inches |
| 6.77 ounces | 6.07 ounces |
| Black, Blue, Red and White | Black, Blue, Gold and Orchid grey |
| -- | Aluminum and Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 5.6 inches |
| 1600 x 720 pixels | 2220 x 1080 pixels |
| TFT | Super AMOLED |
| 270 pixels per inch | 441 pixels per inch |
| No touch screen | No touch screen |
| 7.2 | 8.3 |
| Performance | |
| Samsung Exynos 850 chipset | Samsung Exynos 5 Octa 7885 chipset |
| Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali-G76 GPU | Mali-G71 GPU |
| 9.09 | 9.18 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 9.84 | 10.78 |
| Camera | |
| 48.00 MP + 13.00 MP | 16.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.70 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 |
| 10.78 | 9.24 |
| 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 and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 3000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy A8 (2018) has a general score of 79.2, which is a little bit better than Galaxy A21s's 77.7 general score. Even though the Galaxy A8 (2018) is notably older than the Galaxy A21s, it's body is lighter and just a bit thinner. The Samsung Galaxy A8 (2018) counts with a brighter screen than Samsung Galaxy A21s, because although it has a little smaller display, it also counts with a way better display density and a much better 1080 x 2220 pixels resolution.
The Galaxy A8 (2018) has a slightly bigger memory for applications, games, photos and videos than Galaxy A21s, because although it has a slot for SD memory cards that holds up to 256 GB against 512 GB, it also counts with 32 GB more internal storage. Galaxy A8 (2018) has just a little better performance than Samsung Galaxy A21s, and although they both have a Octa-Core CPU, the Galaxy A8 (2018) also has 1 GB more RAM memory.
Samsung Galaxy A21s has a better camera than Galaxy A8 (2018), because although it has a smaller aperture which is worse for shooting images or videos in low-light situations, and they both have the same 1920x1080 video resolution and the same 30 fps video frame rate, the Samsung Galaxy A21s also counts with a back camera with a lot higher 48 mega pixels resolution.
The Galaxy A21s features a really longer battery duration than Samsung Galaxy A8 (2018), because it has a 5000mAh battery size.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.