| Global Score | |
| 74.8 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.3, 4.1.2, 4.1.1, 4.0.4 | Android 10 |
| 2012-05-03 | 2020-06-19 |
| 5.38 x 2.78 x 0.34 inches | 6.44 x 2.96 x 0.35 inches |
| 4.69 ounces | 6.77 ounces |
| Black, Blue, Brown, Gray, Pink, Red and White | Black, Blue, Red and White |
| Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 195.00 | -- |
| Display / Screen | |
| 4.8 inches | 6.5 inches |
| 720 x 1280 pixels (HD) | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 306 pixels per inch | 270 pixels per inch |
| 300 cd/m2 brightness | -- |
| Capacitive, Multi-touch | No touch screen |
| 8.6 | 7.2 |
| Performance | |
| Samsung Exynos 4 (4412) chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A9 (Quad-Core 1400 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 2 GB RAM | 3 GB RAM |
| ARM Mali-400 MP4 (Quad-Core 266 MHz) GPU | Mali-G76 GPU |
| 9 | 9.09 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 7.56 | 9.84 |
| Camera | |
| 8.00 MP + 1.90 MP | 48.00 MP + 13.00 MP |
| f/2.60 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.33 inches (1/3") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 8.47 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 2100mAh Li-Ion Battery | 5000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 580 hours standby time 16 hours talk time | -- |
| 4 | 6.8 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Samsung Galaxy A21s is just a bit better than Galaxy S III, having a overall score of 77.7 against 74.8. The Samsung Galaxy A21s body is extremely newer than Galaxy S III's, but it's noticeably heavier and just a bit thicker. Both of these phones use Android operating system, but Samsung Galaxy A21s has a newer 10 version and Galaxy S III has Android 4.3 version.
The Galaxy A21s counts with just a little better processing power than Galaxy S III, because although it has doesn't have an additional graphics processing unit, it also counts with more RAM and more CPU cores. The Samsung Galaxy S III counts with a better looking display than Galaxy A21s, because although it has a little lower 1280 x 720 resolution and a much smaller screen, it also counts with a just a bit higher screen density.
Samsung Galaxy A21s features a lot bigger memory to install applications and games or saving photos and videos than Samsung Galaxy S III, and although they both have exactly the same 32 GB internal storage, the Samsung Galaxy A21s also has a slot for an SD memory card that supports up to 512 GB. The Galaxy A21s counts with a much longer battery duration than Samsung Galaxy S III, because it has 5000mAh of battery capacity.
The Samsung Galaxy A21s shoots much clearer pictures and videos than Galaxy S III, and although they both have the same 30 fps video frame rates and the same 1920x1080 (Full HD) video resolution, the Samsung Galaxy A21s also has a much bigger diafragm aperture, a back facing camera with way more MP and a much larger sensor providing a lot higher image quality.
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