Compare phones
| Global Score | |
| 91.8 | 82.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 9.0 Pie, 8.0 Oreo |
| 2021-01-29 | 2018-08-27 |
| 5.97 x 2.80 x 0.31 inches | 6.39 x 3.03 x 0.30 inches |
| 6.03 ounces | 6.74 ounces |
| Gray, Phantom pink, Violet and White | Black and White |
| Aluminum and Plastic | Glass and Metal |
| Scratch-Resistant Glass | -- |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.3 inches |
| 2400 x 1080 pixels | 2220 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 424 pixels per inch | 392 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 8 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 512 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 400 GB) external memory slot |
| 10.1 | 11.34 |
| Camera | |
| 12.00 MP + 10.00 MP | 16.00 MP + 24.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.36 inches (1/2.8") 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 | -- |
| 10.78 | 10.01 |
| 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 | 3700mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 5.68 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 is better than the Galaxy A8 Star, getting a 91.8 score against 82.1. These phones work with Android OS (Operating System), but Samsung Galaxy S21 has an older 11 version and Galaxy A8 Star has Android 9.0 Pie. Even though the Samsung Galaxy S21 is a bit thicker than Galaxy A8 Star, it's lighter and newer.
Galaxy S21 has a bit faster processing unit than Samsung Galaxy A8 Star, and although they both have the same number of cores, the Galaxy S21 also has a greater amount of RAM. Galaxy S21 has a much better looking screen than Samsung Galaxy A8 Star, because although it has a bit smaller display, it also counts with a bit higher resolution of 1080 x 2400 pixels and a little bit better number of pixels per inch in the screen.
The Galaxy A8 Star counts with more memory to store more apps and games than Galaxy S21, because although it has only 64 GB internal memory, it also counts with an external memory slot that supports up to 400 GB. Samsung Galaxy S21 takes clearer videos and photos than Samsung Galaxy A8 Star, because although it has a tinier aperture and a way worse resolution camera, it also counts with a lot larger sensor capturing lot higher quality videos and photos and a way higher video definition.
Galaxy S21 features a little better battery duration than Galaxy A8 Star, because it has a 4000mAh battery size against 3700mAh.
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