| Global Score | |
| 76.1 | 79 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 4.4 |
| 2020-06-29 | 2013-03-14 |
| 6.61 x 3.02 x 0.32 inches | 5.38 x 2.75 x 0.31 inches |
| 6.81 ounces | 4.59 ounces |
| Black | Black, Blue, Red and White |
| Plastic and Plastic | Polycarbonate |
| -- | Scratch-Resistant Glass |
| $ 194.00 | $ 135.00 |
| Display / Screen | |
| 6.5 inches | 5 inches |
| 1600 x 720 pixels | 1080 x 1920 pixels (Full HD) |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 441 pixels per inch |
| No touch screen | Capacitive, Multi-touch |
| 7.3 | 9.1 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 600 APQ8064T chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Krait 300 (Quad-Core 1900 MHz) processor |
| 3 GB RAM | 2 GB (800 MHz) RAM |
| PowerVR GE8320 GPU | Adreno 320 (400 MHz) GPU |
| 9.27 | 9 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSD, microSDHC, microSDXC (up to 64 GB) external memory slot |
| 9.84 | 9.46 |
| Camera | |
| 16.00 MP + 13.00 MP | 13.00 MP + 2.00 MP |
| f/1.80 aperture | f/2.20 aperture |
| -- | 31.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.33 inches (1/3.06") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.35 | 9.02 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE (4G), HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM |
| Nano SIM | Micro SIM |
| 6.7 | 7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 2600mAh Li-Ion Battery |
| Non-Removable Battery | Removable Battery |
| -- | Wireless Charging |
| -- | 17 hours talk time |
| 5.92 | 4.56 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | -- |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Samsung Galaxy S4 has a general score of 79, which is slightly better than the Samsung Galaxy A21's 76.1 overall score. Samsung Galaxy S4 is an a lot older phone than Samsung Galaxy A21, but Samsung was able to make it just a little thinner and notably lighter. These phones work with Android operating system, but Samsung Galaxy S4 has older 4.4 version and Samsung Galaxy A21 has Android 10.
Samsung Galaxy A21 has a little better performance than Samsung Galaxy S4, because although it has doesn't have a GPU, it also counts with more processing cores and a larger amount of RAM. Galaxy S4 has a much sharper screen than Samsung Galaxy A21, because although it has a way smaller screen, it also counts with a higher resolution of 1920 x 1080 pixels and a much higher pixels density.
The Galaxy A21 has just a bit bigger memory to store more games and applications than Galaxy S4, because although it has 0 less internal storage capacity, it also counts with an external memory slot that allows a maximum of 512 GB. Samsung Galaxy A21 counts with a way better battery duration than Galaxy S4, because it has a 54 percent greater battery size.
Galaxy A21 counts with a little bit better camera than Galaxy S4, and although they both have the same video definition, the same video frame rates and a 0.33 inches sensor, the Galaxy A21 also has a bigger aperture to capture better low-light photos and video and a better resolution back camera.
Despite of being the best phone of the ones we compare here, the Samsung Galaxy S4 is also very cheap compared to the other devices.
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