Compare phones
| Global Score | |
| 81.7 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2017-04-21 | 2020-06-19 |
| 5.86 x 2.68 x 0.31 inches | 6.44 x 2.96 x 0.35 inches |
| 5.47 ounces | 6.77 ounces |
| Arctic silver, Burgundy red, Coral blue, Maple gold, Midnight black, Orchid gray and Rose pink | Black, Blue, Red and White |
| Aluminum and Glass (Corning Gorilla Glass 5) | -- |
| Scratch-Resistant Glass | -- |
| $ 173.00 | -- |
| Display / Screen | |
| 5.8 inches | 6.5 inches |
| 2960 x 1440 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 568 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.9 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 835 MSM8998 chipset | Samsung Exynos 850 chipset |
| Kryo 280, 64-bit, 10 nm (Octa-Core 2350 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 540 GPU | Mali-G76 GPU |
| 9.27 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 9.84 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 9.79 | 10.78 |
| 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 | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3000mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.96 | 6.8 |
| Other Features | |
| Bluetooth 5.0, EDR | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Comparison review
The Galaxy S8 has a score of 81.7, which is a bit better than Galaxy A21s's score of 77.7. Galaxy S8's construction is lighter and somewhat thinner than Galaxy A21s, despite of the fact that it was released many years before. The Galaxy S8 features a little faster processor than Samsung Galaxy A21s, and although they both have 8 cpu cores, the Galaxy S8 also has more RAM memory.
The Samsung Galaxy S8 has a way better screen than Samsung Galaxy A21s, because although it has a little bit smaller screen, it also counts with a lot higher resolution of 1440 x 2960 and a lot greater pixel density. The Galaxy S8 has a little bit more storage capacity to store more apps and games than Galaxy A21s, because although it has a slot for SD memory cards that admits 256 GB smaller, it also counts with 64 GB internal memory.
The Samsung Galaxy A21s features a much longer battery lifetime than Samsung Galaxy S8, because it has a 67 percent larger battery size. Samsung Galaxy A21s features a superior camera than Samsung Galaxy S8, because although it has a smaller aperture which is not favorable for capturing photos and/or video in low light situations, and they both have the same video resolution and the same 30 fps video frame rate, the Samsung Galaxy A21s also counts with a way more mega pixels back-facing camera and a lot bigger sensor taking more light and vivid colors.
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