Compare phones
| Global Score | |
| 91.8 | 79.2 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | -- |
| 2021-01-29 | 2018-01-06 |
| 5.97 x 2.80 x 0.31 inches | 5.87 x 2.78 x 0.33 inches |
| 6.03 ounces | 6.07 ounces |
| Gray, Phantom pink, Violet and White | Black, Blue, Gold and Orchid grey |
| Aluminum and Plastic | Aluminum and Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 5.6 inches |
| 2400 x 1080 pixels | 2220 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 424 pixels per inch | 441 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 8.3 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 5 Octa 7885 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G71 GPU |
| 9.63 | 9.18 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 256 GB) external memory slot |
| 10.1 | 10.78 |
| Camera | |
| 12.00 MP + 10.00 MP | 16.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| 26.00mm focal length | -- |
| 0.57 inches (1/1.76") sensor | -- |
| 7680 x 4320 (24 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 10.78 | 9.24 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.3 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Samsung Galaxy S21 is much better than Galaxy A8 (2018), getting a overall score of 91.8 against 79.2. Samsung Galaxy S21 is a newer cellphone, and it's also a bit thinner and just a little bit lighter than the Galaxy A8 (2018). The Samsung Galaxy S21 has a more vivid display than Galaxy A8 (2018), because although it has a quite worse amount of pixels per screen inch, it also counts with a slightly better resolution of 1080 x 2400 and a little larger display.
Samsung Galaxy S21 features just a bit better processing power than Galaxy A8 (2018), and although they both have 8 cpu cores, the Samsung Galaxy S21 also has a larger amount of RAM memory. Samsung Galaxy A8 (2018) counts with just a bit bigger memory to install games and applications than Galaxy S21, because although it has less internal storage, it also counts with a slot for SD memory cards that supports a maximum of 256 GB.
The Galaxy S21 has greater battery duration than Galaxy A8 (2018), because it has a 33% larger battery size. Galaxy S21 counts with a better camera than Galaxy A8 (2018), because although it has a camera in the back with lot less mega pixels and a tinier aperture which is worse for capturing photographs in low-light environments, it also counts with a lot better video quality.
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