| Global Score | |
| 91.8 | 76.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 4.4.4 |
| 2021-01-29 | -- |
| 5.97 x 2.80 x 0.31 inches | 5.21 x 2.58 x 0.26 inches |
| 6.03 ounces | 4.06 ounces |
| Gray, Phantom pink, Violet and White | Black, Blue, Gold, Gray and White |
| Aluminum and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | $ 320.00 |
| Display / Screen | |
| 6.2 inches | 4.7 inches |
| 2400 x 1080 pixels | 720 x 1280 pixels (HD) |
| Dynamic AMOLED | Super AMOLED |
| 424 pixels per inch | 312 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | Capacitive, Multi-touch |
| 9.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 801 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Krait 400 (Quad-Core 2500 MHz) processor |
| 8 GB RAM | 2 GB (933 MHz) RAM |
| Adreno 660 GPU | Adreno 330 (450 MHz) GPU |
| 9.63 | 9.36 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 5.8 |
| Camera | |
| 12.00 MP + 10.00 MP | 12.00 MP + 2.10 MP |
| f/1.80 aperture | f/2.20 aperture |
| 26.00mm focal length | 31.00mm focal length |
| 0.57 inches (1/1.76") sensor | -- |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 10.78 | 9.46 |
| 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, EDGE, GPRS and GSM |
| Nano SIM | Nano SIM |
| 10.7 | 7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 1860mAh Li-Ion Battery |
| Non-Removable Battery | Removable Battery |
| Wireless Charging | -- |
| -- | 11 hours talk time |
| 5.92 | 3.76 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
The Samsung Galaxy S21 has an overall score of 91.8, which is much better than Samsung Galaxy Alpha's 76.3 general score. Samsung Galaxy S21's design is thicker and a lot heavier than the Samsung Galaxy Alpha. Both phones in this comparison review include Android OS, but Samsung Galaxy S21 has 11 version and Samsung Galaxy Alpha has Android 4.4.4.
The Samsung Galaxy S21 features a bit faster CPU than Galaxy Alpha, because although it has doesn't have an extra GPU, it also counts with a higher number of cores and a higher amount of RAM memory. The Samsung Galaxy S21 counts with a little sharper display than Galaxy Alpha, because it has a lot higher 1080 x 2400px resolution, a much larger screen and a higher screen density.
The Samsung Galaxy S21 has a lot bigger storage capacity to install applications and games or saving photos and videos than Galaxy Alpha, because it has 96 GB more internal memory capacity. Samsung Galaxy S21 has a way better battery life than Samsung Galaxy Alpha, because it has a 4000mAh battery capacity.
Samsung Galaxy S21 counts with a much better camera than Samsung Galaxy Alpha, and although they both have a same resolution back-facing camera, the Samsung Galaxy S21 also has a larger aperture for better low-light images and videos and a lot higher video quality.
The Samsung Galaxy S21 is way more expensive than the Galaxy Alpha, but it's still a great deal, because you can get a lot more features for that extra money.
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