Compare phones
| Global Score | |
| 76.7 | 98.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10, 8.0 Oreo | Android 11 |
| 2018-06-28 | 2021-01-29 |
| 6.27 x 2.98 x 0.32 inches | 6.50 x 2.98 x 0.35 inches |
| 6.24 ounces | 8.04 ounces |
| Black, Blue, Gold and Pink | Phantom black and Silver |
| Plastic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6 inches | 6.8 inches |
| 1480 x 720 pixels | 3200 x 1440 pixels |
| Super AMOLED | Dynamic AMOLED |
| 274 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 450 SDM450 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 12 GB RAM |
| Adreno 506 GPU | Adreno 660 GPU |
| 8.91 | 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 |
| 26.00mm focal length | 24.00mm focal length |
| 0.36 inches (1/2.8") sensor | 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 |
| 9.46 | 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 | |
| 3500mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.44 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.1 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 Ultra is a lot better than the Galaxy J8, having a score of 98.1 against 76.7. Galaxy S21 Ultra's body is incredibly newer, but a little bit thicker and notably heavier than Galaxy J8. Both phones in this comparison come with Android OS (operating system), but Galaxy S21 Ultra has 11 version and Galaxy J8 has Android 10 version, counting with a couple additional features.
The Samsung Galaxy S21 Ultra features a little faster processor than Galaxy J8, and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has 8 GB more RAM. Galaxy S21 Ultra counts with a much better screen than Samsung Galaxy J8, because it has way more pixels per screen inch, a way better 1440 x 3200 pixels resolution and a bit bigger display.
The Galaxy S21 Ultra counts with a much better camera than Samsung Galaxy J8, because although it has a tinier aperture which is not recommended for low-light captures and video, it also counts with a much higher 7680x4320 video definition, a way larger sensor providing a way better image quality and a back camera with a lot better resolution.
Galaxy J8 features a slightly better memory for apps and games than Galaxy S21 Ultra, because although it has just 64 GB internal storage, it also counts with an external memory card slot that supports a maximum of 256 GB. The Galaxy S21 Ultra features a much better battery life than Samsung Galaxy J8, because it has a 43 percent more battery size.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.