Compare phones
| Global Score | |
| 98.1 | 76.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10, 8.0 Oreo |
| 2021-01-29 | 2018-06-28 |
| 6.50 x 2.98 x 0.35 inches | 6.27 x 2.98 x 0.32 inches |
| 8.04 ounces | 6.24 ounces |
| Phantom black and Silver | Black, Blue, Gold and Pink |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic |
| Scratch-Resistant Glass | -- |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6 inches |
| 3200 x 1440 pixels | 1480 x 720 pixels |
| Dynamic AMOLED | Super AMOLED |
| 516 pixels per inch | 274 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 450 SDM450 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 506 GPU |
| 9.72 | 8.91 |
| 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 | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.36 inches (1/2.8") 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 | 9.46 |
| 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 | 3500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 5.44 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 4.2 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy S21 Ultra has a global score of 98.1, which is a lot better than Samsung Galaxy J8's 76.7 score. The Galaxy S21 Ultra design is much newer, but a little thicker and much heavier than Samsung Galaxy J8. Both of these devices work with Android OS (operating system), but Galaxy S21 Ultra has a more recent 11 version and Samsung Galaxy J8 has Android 10.
Galaxy S21 Ultra has a much sharper display than Samsung Galaxy J8, because it has a little bigger screen, a much higher pixels amount per inch in the display and a much better resolution of 1440 x 3200 pixels. Samsung Galaxy J8 features just a bit more memory capacity for games and applications than Samsung Galaxy S21 Ultra, because although it has just 64 GB internal storage, it also counts with a SD card slot that supports a maximum of 256 GB.
The Samsung Galaxy S21 Ultra counts with a little faster processing unit than Galaxy J8, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 Ultra also has a greater amount of RAM memory. Samsung Galaxy S21 Ultra features a very superior battery lifetime than Samsung Galaxy J8, because it has a 43% more battery capacity.
The Galaxy S21 Ultra shoots much clearer photos and videos than Galaxy J8, because although it has a tinier aperture, it also counts with a lot better video resolution, a much bigger back camera sensor taking lot higher quality videos and photos and a camera with much more MP.
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