Compare phones
| Global Score | |
| 79.2 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11 |
| 2018-01-06 | 2021-01-29 |
| 5.87 x 2.78 x 0.33 inches | 5.97 x 2.80 x 0.31 inches |
| 6.07 ounces | 6.03 ounces |
| Black, Blue, Gold and Orchid grey | Gray, Phantom pink, Violet and White |
| Aluminum and Glass (Corning Gorilla Glass 5) | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 5.6 inches | 6.2 inches |
| 2220 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 441 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.3 | 9.2 |
| Performance | |
| Samsung Exynos 5 Octa 7885 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G71 GPU | Adreno 660 GPU |
| 9.18 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | No SD card slot |
| 10.78 | 10.1 |
| Camera | |
| 16.00 MP + 16.00 MP | 12.00 MP + 10.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| -- | 0.57 inches (1/1.76") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.24 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 4.96 | 5.92 |
| 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
The Samsung Galaxy S21 is better than Galaxy A8 (2018), with a 91.8 score against 79.2. Samsung Galaxy S21 is a notably newer device, and it is also just a little bit thinner and a bit lighter than the Galaxy A8 (2018). Galaxy S21 features a much better looking screen than Samsung Galaxy A8 (2018), because although it has a quite inferior quantity of pixels per display inch, it also counts with a little bit larger screen and a little bit higher 1080 x 2400 resolution.
The Galaxy S21 has a bit better processor than Galaxy A8 (2018), and although they both have the same number of cores, the Galaxy S21 also has more RAM. Samsung Galaxy A8 (2018) features a slightly better memory capacity to store more apps and games than Galaxy S21, because although it has only 64 GB internal memory, it also counts with a SD extension slot that admits a maximum of 256 GB.
Samsung Galaxy S21 features a superior camera than Samsung Galaxy A8 (2018), because although it has a way worse 12 megapixels resolution back camera and a smaller aperture which is not so good for low-light images and video, it also counts with a way better 7680x4320 video definition. Samsung Galaxy S21 counts with better battery lifetime than Galaxy A8 (2018), because it has 4000mAh of battery capacity.
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