| Global Score | |
| 74.8 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.3, 4.1.2, 4.1.1, 4.0.4 | Android 11 |
| 2012-05-03 | 2021-01-29 |
| 5.38 x 2.78 x 0.34 inches | 5.97 x 2.80 x 0.31 inches |
| 4.69 ounces | 6.03 ounces |
| Black, Blue, Brown, Gray, Pink, Red and White | Gray, Phantom pink, Violet and White |
| Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 195.00 | $ 722.00 |
| Display / Screen | |
| 4.8 inches | 6.2 inches |
| 720 x 1280 pixels (HD) | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 306 pixels per inch | 424 pixels per inch |
| 300 cd/m2 brightness | 1300 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 8.6 | 9.2 |
| Performance | |
| Samsung Exynos 4 (4412) chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A9 (Quad-Core 1400 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 2 GB RAM | 8 GB RAM |
| ARM Mali-400 MP4 (Quad-Core 266 MHz) GPU | Adreno 660 GPU |
| 9 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | No SD card slot |
| 7.56 | 10.1 |
| Camera | |
| 8.00 MP + 1.90 MP | 12.00 MP + 10.00 MP |
| f/2.60 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.33 inches (1/3") sensor | 0.57 inches (1/1.76") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 8.47 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM |
| 7 | 10.7 |
| Battery Life | |
| 2100mAh Li-Ion Battery | 4000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 580 hours standby time 16 hours talk time | -- |
| 4 | 5.92 |
| 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, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
The Galaxy S21 has a global score of 91.8, which is much better than Galaxy S III's 74.8 score. Galaxy S21 is a notably newer and just a little bit thinner device than Galaxy S III, although it is way heavier. These phones have Android OS, but Galaxy S21 has 11 version while Galaxy S III has Android 4.3 version.
Samsung Galaxy S21 features a little more vivid screen than Galaxy S III, because it has a higher display pixels density, a lot better resolution of 1080 x 2400px, a way brighter screen and a larger display. The Galaxy S21 has a way bigger memory capacity for games and applications than Samsung Galaxy S III, because although it has no slot for SD memory cards, it also counts with 96 GB more internal storage.
The Galaxy S21 features just a little better hardware performance than Samsung Galaxy S III, because although it has doesn't have an extra graphics processor, it also counts with more RAM and 4 more CPU cores. The Samsung Galaxy S21 takes way better photos and videos than Galaxy S III, because it has a lot larger camera aperture, a way higher 7680x4320 video definition, a much larger sensor and a back facing camera with way more mega pixels.
Galaxy S21 counts with a way better battery lifetime than Galaxy S III, because it has a 90% bigger battery capacity.
Although Samsung Galaxy S21 is a better device, it costs a lot more than the Galaxy S III, and it doesn't have such a good price and quality relation as the Galaxy S III. If you are trying to save a few dollars, you can buy the Galaxy S III, giving up a couple features and specs, but you'll get the most out of your savings.
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