Compare phones
| Global Score | |
| 91.8 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10 |
| 2021-01-29 | 2020-06-19 |
| 5.97 x 2.80 x 0.31 inches | 6.44 x 2.96 x 0.35 inches |
| 6.03 ounces | 6.77 ounces |
| Gray, Phantom pink, Violet and White | Black, Blue, Red and White |
| Aluminum and Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| Dynamic AMOLED | TFT |
| 424 pixels per inch | 270 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 850 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 3 GB RAM |
| Adreno 660 GPU | Mali-G76 GPU |
| 9.63 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 9.84 |
| Camera | |
| 12.00 MP + 10.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 10.78 | 10.78 |
| 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, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 6.8 |
| 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 and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy S21 has a general score of 91.8, which is much better than the Samsung Galaxy A21s's 77.7 overall score. Both phones we are comparing use Android OS, but Samsung Galaxy S21 has a newer 11 version and Samsung Galaxy A21s has Android 10, so it counts with a couple additional features. Samsung Galaxy S21 is a somewhat lighter and thinner phone than the Samsung Galaxy A21s, even though both were only released with a couple months difference.
The Samsung Galaxy S21 features an incredibly better looking screen than Galaxy A21s, because although it has a little smaller screen, it also counts with a lot better pixel quantity per inch in the screen and a way higher resolution of 1080 x 2400px. The Samsung Galaxy S21 counts with a bit faster processing unit than Samsung Galaxy A21s, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 also has a larger amount of RAM memory.
The Galaxy A21s's camera is just as good as Samsung Galaxy S21's camera, because although the Galaxy A21s has a tinier aperture which is not good for capturing images and video in low light environments and a smaller camera sensor offering a worse image quality, and they both have the same (Full HD) video quality, it also counts with better video frame rate and a lot higher resolution back facing camera.
The Galaxy S21 counts with a little bit more memory to install applications and games or saving photos and videos than Galaxy A21s, because although it has no slot for SD memory cards, it also counts with 96 GB more internal memory capacity. Galaxy A21s counts with better battery duration than Galaxy S21, because it has 5000mAh of battery capacity against 4000mAh.
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