Compare phones
| Global Score | |
| 77.7 | 81.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | -- |
| 2020-06-19 | 2017-04-21 |
| 6.44 x 2.96 x 0.35 inches | 5.86 x 2.68 x 0.31 inches |
| 6.77 ounces | 5.47 ounces |
| Black, Blue, Red and White | Arctic silver, Burgundy red, Coral blue, Maple gold, Midnight black, Orchid gray and Rose pink |
| -- | Aluminum and Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| -- | $ 173.00 |
| Display / Screen | |
| 6.5 inches | 5.8 inches |
| 1600 x 720 pixels | 2960 x 1440 pixels |
| TFT | Super AMOLED |
| 270 pixels per inch | 568 pixels per inch |
| No touch screen | No touch screen |
| 7.2 | 8.9 |
| Performance | |
| Samsung Exynos 850 chipset | Qualcomm Snapdragon 835 MSM8998 chipset |
| Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor | Kryo 280, 64-bit, 10 nm (Octa-Core 2350 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali-G76 GPU | Adreno 540 GPU |
| 9.09 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 9.84 | 10.78 |
| Camera | |
| 48.00 MP + 13.00 MP | 12.00 MP + 8.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.39 inches (1/2.55") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 10.78 | 9.79 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.8 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0, EDR |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Samsung Galaxy S8 has a global score of 81.7, which is just a bit better than the Galaxy A21s's global score of 77.7. Even though the Samsung Galaxy S8 is incredibly older than the Galaxy A21s, it's construction is lighter and thinner. Samsung Galaxy S8 has a much more vibrant screen than Galaxy A21s, because although it has a bit smaller display, it also counts with a lot higher screen pixels density and a way better 1440 x 2960 resolution.
The Samsung Galaxy S8 has a little bit better storage to install applications and games than Galaxy A21s, because although it has a SD memory card expansion slot that holds up to 256 GB against 512 GB, it also counts with 64 GB internal storage capacity. The Galaxy S8 counts with a bit faster processing unit than Galaxy A21s, and although they both have 8 CPU cores, the Galaxy S8 also has a higher amount of RAM memory.
Galaxy A21s features a better camera than Samsung Galaxy S8, because although it has a smaller aperture which is not recommended for low light photos and videos, and they both have the same 30 frames per second video frame rates and the same video quality, the Galaxy A21s also counts with a back camera with a lot better resolution and a way bigger camera sensor which offers a much better photo and video quality.
Galaxy A21s features a way better battery performance than Galaxy S8, because it has a 5000mAh battery capacity.
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