Compare phones
| Global Score | |
| 72.2 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.3, 4.2, 4.1, 4.0.4 | Android 10 |
| 2012-06-04 | 2020-06-19 |
| 5.38 x 2.78 x 0.34 inches | 6.44 x 2.96 x 0.35 inches |
| 4.73 ounces | 6.77 ounces |
| Blue, Red and White | Black, Blue, Red and White |
| Polycarbonate | -- |
| Scratch-Resistant Glass | -- |
| $ 585.00 | -- |
| 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 |
| Capacitive, Multi-touch | No touch screen |
| 8.2 | 7.2 |
| Performance | |
| Qualcomm Snapdragon S4 Plus MSM8960 chipset | Samsung Exynos 850 chipset |
| Krait (Dual-Core 1500 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 2 GB (500 MHz) RAM | 3 GB RAM |
| Adreno 225 (400 MHz) GPU | Mali-G76 GPU |
| 8.46 | 9.09 |
| Storage | |
| 16 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 |
| 6.16 | 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 | -- |
| 199 hours standby time 8 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 |
Comparison review
The Galaxy A21s is a little bit better than the Samsung Galaxy S III AT&T, having a global score of 77.7 against 72.2. Both of these phones have Android OS, but Galaxy A21s has 10 version and Samsung Galaxy S III AT&T has Android 4.3 version, so it provides you some additional features. The Galaxy A21s is a a lot newer phone than the Samsung Galaxy S III AT&T, but it is just a little bit thicker and way heavier.
The Galaxy A21s features a bit superior CPU than Galaxy S III AT&T, because although it has doesn't have an additional graphics processing unit, it also counts with more RAM memory and a larger number of faster cores. The Galaxy S III AT&T counts with a much better looking screen than Galaxy A21s, because although it has a quite lower resolution of 1280 x 720 and a way smaller display, it also counts with a little more pixels per inch in the display.
Samsung Galaxy A21s has a lot bigger memory capacity to store more games and applications than Galaxy S III AT&T, because it has an external SD slot that allows a maximum of 512 GB and 16 GB more internal memory. Samsung Galaxy A21s counts with a really longer battery life than Galaxy S III AT&T, because it has 5000mAh of battery capacity against 2100mAh.
Galaxy A21s captures way better photos and videos than Galaxy S III AT&T, and although they both have the same 30 fps video frame rate and the same video definition, the Galaxy A21s also has a way larger back-facing camera sensor which gives a much better photo and video quality, a back camera with a lot better resolution and a lot larger aperture to capture better images and videos in poorly lited situations.
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