Compare phones
| Global Score | |
| 91.8 | 81.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | -- |
| 2021-01-29 | 2017-04-21 |
| 5.97 x 2.80 x 0.31 inches | 5.86 x 2.68 x 0.31 inches |
| 6.03 ounces | 5.47 ounces |
| Gray, Phantom pink, Violet and White | Arctic silver, Burgundy red, Coral blue, Maple gold, Midnight black, Orchid gray and Rose pink |
| Aluminum and Plastic | Aluminum and Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | $ 173.00 |
| Display / Screen | |
| 6.2 inches | 5.8 inches |
| 2400 x 1080 pixels | 2960 x 1440 pixels |
| Dynamic AMOLED | Super AMOLED |
| 424 pixels per inch | 568 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 8.9 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 835 MSM8998 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 280, 64-bit, 10 nm (Octa-Core 2350 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 540 GPU |
| 9.63 | 9.27 |
| 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 | |
| 12.00 MP + 10.00 MP | 12.00 MP + 8.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.39 inches (1/2.55") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 10.78 | 9.79 |
| 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+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 5.92 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0, EDR |
| 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 | -- |
Comparison review
Galaxy S21 is much better than Samsung Galaxy S8, with a 91.8 score against 81.7. The Galaxy S21 is a just a little heavier cellphone than Samsung Galaxy S8, but both are 0.31inches thick. Galaxy S21 counts with a bit more vivid screen than Galaxy S8, because although it has a way lower 1080 x 2400px resolution and much less pixels per inch of display, it also counts with a quite larger screen.
The Galaxy S8 counts with a bit bigger storage to store more games and applications than Galaxy S21, because although it has only 64 GB internal storage capacity, it also counts with a SD card slot that allows up to 256 GB. Galaxy S21 features a bit superior CPU than Galaxy S8, and although they both have 8 processing cores, the Galaxy S21 also has 4 GB more RAM memory.
Galaxy S21 has a much better camera than Galaxy S8, because although it has a smaller camera aperture which is not nice for shooting images in low-light environments, and they both have a 12 megapixels back-facing camera, the Galaxy S21 also counts with a lot bigger back camera sensor taking more light and vivid colors and a much higher video definition.
Galaxy S21 has better battery lifetime than Galaxy S8, because it has 4000mAh of battery capacity.
Although Samsung Galaxy S21 is a better device, it is way more expensive than Galaxy S8, and it doesn't have such a good relation between it's price and quality as the Galaxy S8. So if you want that extra features and specs, you can buy Samsung Galaxy S21, otherwise you can save a couple dollars and get the Galaxy S8, letting go some features and specifications.
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