Compare phones
| Global Score | |
| 11.67 | 9.46 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | -- |
| 2021-01-29 | 2018-01-06 |
| 6.50 x 2.98 x 0.35 inches | 5.87 x 2.78 x 0.33 inches |
| 8.04 ounces | 6.07 ounces |
| Phantom black and Silver | Black, Blue, Gold and Orchid grey |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Aluminum and Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 5.6 inches |
| 3200 x 1440 pixels | 2220 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 516 pixels per inch | 441 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 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 |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G71 GPU |
| 9.72 | 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 | |
| 108.00 MP + 40.00 MP | 16.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| 24.00mm focal length | -- |
| 0.75 inches (1/1.33") 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 | -- |
| 13.75 | 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 | |
| 5000mAh Li - Polymer Battery | 3000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.96 | 4.24 |
| Other Features | |
| Bluetooth 5.1 | 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 Ultra is way better than Galaxy A8 (2018), getting a general score of 11.67 against 9.46. Samsung Galaxy S21 Ultra's design is much newer than the Galaxy A8 (2018)'s, although it is a lot heavier and a little bit thicker. Samsung Galaxy S21 Ultra counts with a bit superior CPU than Galaxy A8 (2018), and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has 8 GB more RAM.
The Samsung Galaxy S21 Ultra counts with a more vivid screen than Galaxy A8 (2018), because it has a better resolution of 1440 x 3200 pixels, a larger display and a quite greater pixel density. The Galaxy S21 Ultra counts with a lot better camera than Galaxy A8 (2018), because although it has a smaller aperture which is not nice for low light photography, it also counts with a way better video definition and a lot higher resolution camera.
The Galaxy A8 (2018) has a bit more memory to install applications and games or saving photos and videos than Galaxy S21 Ultra, because although it has just 64 GB internal memory, it also counts with a slot for external memory cards that supports a maximum of 256 GB. The Samsung Galaxy S21 Ultra counts with superior battery performance than Samsung Galaxy A8 (2018), because it has a 67 percent bigger battery capacity.