Compare phones
| Global Score | |
| 76.7 | 91.8 |
| 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 | 5.97 x 2.80 x 0.31 inches |
| 6.24 ounces | 6.03 ounces |
| Black, Blue, Gold and Pink | Gray, Phantom pink, Violet and White |
| Plastic | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6 inches | 6.2 inches |
| 1480 x 720 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 274 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 9.2 |
| 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 | 8 GB RAM |
| Adreno 506 GPU | Adreno 660 GPU |
| 8.91 | 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 | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 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 |
| 9.46 | 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 | |
| 3500mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.44 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| 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
Samsung Galaxy S21 has a global score of 91.8, which is better than Galaxy J8's 76.7 overall score. The Samsung Galaxy S21 is a notably newer device, and it's also a little bit thinner and just a little bit lighter than the Galaxy J8. Both phones in this comparison include Android operating system, but Samsung Galaxy S21 has a more recent 11 version and Galaxy J8 has Android 10, providing a lot of extra features.
Galaxy S21 features just a little better hardware performance than Galaxy J8, and although they both have a Octa-Core processing unit, the Galaxy S21 also has a greater amount of RAM memory. Galaxy S21 features a much more vibrant display than Samsung Galaxy J8, because it has much more pixels per inch of screen, a little bigger display and a much higher resolution of 1080 x 2400 pixels.
The Samsung Galaxy S21 features a superior camera than Galaxy J8, because although it has a camera with lot less mega-pixels and a tinier aperture, it also counts with a lot higher video definition and a lot larger camera sensor taking way higher quality pictures. The Galaxy J8 has slightly more storage to store more apps and games than Samsung Galaxy S21, because although it has 0 less internal memory, it also counts with an external SD slot that supports up to 256 GB.
Galaxy S21 counts with just a bit better battery performance than Galaxy J8, because it has 4000mAh of battery capacity against 3500mAh.
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