Compare phones
| Global Score | |
| 79.2 | 98.1 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11 |
| 2018-01-06 | 2021-01-29 |
| 5.87 x 2.78 x 0.33 inches | 6.50 x 2.98 x 0.35 inches |
| 6.07 ounces | 8.04 ounces |
| Black, Blue, Gold and Orchid grey | Phantom black and Silver |
| Aluminum and Glass (Corning Gorilla Glass 5) | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 5.6 inches | 6.8 inches |
| 2220 x 1080 pixels | 3200 x 1440 pixels |
| Super AMOLED | Dynamic AMOLED |
| 441 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.3 | 9.8 |
| 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 | 12 GB RAM |
| Mali-G71 GPU | Adreno 660 GPU |
| 9.18 | 9.72 |
| 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 | 108.00 MP + 40.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| -- | 24.00mm focal length |
| -- | 0.75 inches (1/1.33") 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 | 13.75 |
| 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 | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 4.96 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| 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
Galaxy S21 Ultra has a global score of 98.1, which is a lot better than the Galaxy A8 (2018)'s 79.2 score. Although Galaxy S21 Ultra is extremely newer than the Galaxy A8 (2018), it is extremely heavier and a little bit thicker. Samsung Galaxy S21 Ultra has a sharper display than Galaxy A8 (2018), because it has a bigger display, a just a bit higher quantity of pixels in each inch of display and a higher 1440 x 3200px resolution.
Samsung Galaxy S21 Ultra has a bit more powerful processing unit than Samsung Galaxy A8 (2018), and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has 8 GB more RAM memory. The Galaxy S21 Ultra has a greater camera than Samsung Galaxy A8 (2018), because although it has a smaller diafragm aperture which is not favorable for low-light captures and videos, it also counts with a back facing camera with lot more megapixels and a way better video quality.
The Samsung Galaxy A8 (2018) has slightly more storage to store more apps and games than Galaxy S21 Ultra, because although it has only 64 GB internal memory, it also counts with a SD card slot that allows a maximum of 256 GB. The Galaxy S21 Ultra counts with a very superior battery life than Samsung Galaxy A8 (2018), because it has 5000mAh of battery capacity.
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