| Global Score | |
| 71.7 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4 | Android 10 |
| 2013-06-05 | 2020-06-29 |
| 5.50 x 2.81 x 0.36 inches | 6.61 x 3.02 x 0.32 inches |
| 5.33 ounces | 6.81 ounces |
| Blue, Gray and Orange | Black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 145.00 | $ 194.00 |
| Display / Screen | |
| 5 inches | 6.5 inches |
| 1080 x 1920 pixels (Full HD) | 1600 x 720 pixels |
| TFT | IPS LCD |
| 441 pixels per inch | 270 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 600 APQ8064T chipset | Mediatek Helio P35 chipset |
| Krait 300 (Quad-Core 1900 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 3 GB RAM |
| Adreno 320 (400 MHz) GPU | PowerVR GE8320 GPU |
| 8.91 | 9.27 |
| 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 + 2.00 MP | 16.00 MP + 13.00 MP |
| -- | f/1.80 aperture |
| -- | 0.33 inches (1/3.06") sensor |
| 1920 x 1080 (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 6.49 | 9.35 |
| 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 |
| 7 | 6.7 |
| Battery Life | |
| 2600mAh Li-Ion Battery | 4000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 17 hours talk time | -- |
| 4.56 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Galaxy A21 has an overall score of 76.1, which is a bit better than Galaxy S4 Active's 71.7 score. These phones include Android OS, but Galaxy A21 has newer 10 version and Galaxy S4 Active has Android 4.4. Galaxy A21's construction is notably newer and thinner than Galaxy S4 Active's, although it's also a lot heavier.
The Galaxy A21 has a bit superior processing unit than Galaxy S4 Active, because although it has doesn't have an additional graphics processing unit, it also counts with a greater number of faster cores and more RAM memory. The Galaxy S4 Active features a much more vibrant screen than Galaxy A21, because although it has a much smaller screen, it also counts with a higher 1920 x 1080 resolution and a much greater quantity of pixels per screen inch.
The Samsung Galaxy A21 counts with much more storage to install applications and games than Galaxy S4 Active, because it has a SD extension slot that holds up to 512 GB and more internal storage. The Galaxy A21 has a superior battery duration than Galaxy S4 Active, because it has a 54% greater battery capacity.
Galaxy A21 features a lot better camera than Galaxy S4 Active, and although they both have the same video resolution and the same video frame rates, the Galaxy A21 also has a much more megapixels back facing camera.
The Galaxy A21 is more expensive than the Galaxy S4 Active, but you can get a better phone for that few more dollars.
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