Compare phones
| Global Score | |
| 82.1 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo | Android 10 |
| 2018-08-27 | 2020-06-19 |
| 6.39 x 3.03 x 0.30 inches | 6.44 x 2.96 x 0.35 inches |
| 6.74 ounces | 6.77 ounces |
| Black and White | Black, Blue, Red and White |
| Glass and Metal | -- |
| Display / Screen | |
| 6.3 inches | 6.5 inches |
| 2220 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 392 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Samsung Exynos 850 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 512 GPU | Mali-G76 GPU |
| 9.27 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.34 | 9.84 |
| Camera | |
| 16.00 MP + 24.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 10.01 | 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 | |
| 3700mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.68 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy A8 Star has a general score of 82.1, which is a little bit better than Galaxy A21s's general score of 77.7. Even though the Galaxy A8 Star is older than Galaxy A21s, it's body is somewhat thinner and just a little bit lighter. These phones come with Android operating system, but the Galaxy A8 Star has newer 9.0 Pie version and Galaxy A21s has Android 10, providing some extra features and performance tweaks.
Samsung Galaxy A8 Star counts with a little better hardware performance than Samsung Galaxy A21s, and although they both have 8 CPU cores, the Samsung Galaxy A8 Star also has a larger amount of RAM memory. The Galaxy A8 Star features a much better screen than Samsung Galaxy A21s, because although it has a little smaller display, it also counts with a greater pixels number per screen inch and a way higher 1080 x 2220 resolution.
The Samsung Galaxy A21s features a bit better camera than Samsung Galaxy A8 Star, because although it has a tinier aperture, and they both have the same video quality and the same 30 fps video frame rates, the Samsung Galaxy A21s also counts with a much higher 48 mega-pixels resolution back-facing camera and a much larger sensor shooting much better quality videos and photographs.
Galaxy A8 Star features a bigger memory capacity for applications, games, photos and videos than Galaxy A21s, because although it has a SD memory slot that supports 112 GB smaller, it also counts with 64 GB internal memory. Galaxy A21s has superior battery life than Samsung Galaxy A8 Star, because it has a 5000mAh battery size against 3700mAh.
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