| Global Score | |
| 71.7 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4 | Android 11, 10 |
| 2013-06-05 | 2020-03-23 |
| 5.50 x 2.81 x 0.36 inches | 6.26 x 2.96 x 0.35 inches |
| 5.33 ounces | 6.63 ounces |
| Blue, Gray and Orange | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 145.00 | -- |
| Display / Screen | |
| 5 inches | 6.4 inches |
| 1080 x 1920 pixels (Full HD) | 2340 x 1080 pixels |
| TFT | Super AMOLED |
| 441 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 600 APQ8064T chipset | Exynos 9611 chipset |
| Krait 300 (Quad-Core 1900 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| Adreno 320 (400 MHz) GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| Storage | |
| 16 GB internal memory | 64 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.16 | 11.74 |
| Camera | |
| 8.00 MP + 2.00 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 6.49 | 11.55 |
| 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 | |
| 2600mAh Li-Ion Battery | 6000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 17 hours talk time | -- |
| 4.56 | 7.52 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Infra-red port | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Samsung Galaxy M21 is better than Samsung Galaxy S4 Active, getting an 84.1 score against 71.7. Both of these phones work with Android OS (operating system), but Samsung Galaxy M21 has a newer 11 version while Samsung Galaxy S4 Active has Android 4.4 version, so it provides some nice extra features and some performance improvements. Samsung Galaxy M21's body is much newer and a little bit thinner, but also somewhat heavier than the Samsung Galaxy S4 Active.
The Galaxy M21 has a bit faster processor than Galaxy S4 Active, because although it has doesn't have an extra graphics co-processor, it also counts with a greater number of faster cores and a higher amount of RAM. The Galaxy S4 Active has just a bit better looking display than Galaxy M21, because although it has a really smaller display and a little bit lower resolution of 1920 x 1080 pixels, it also counts with a little bit greater count of pixels in each inch of display.
Galaxy M21 counts with much more memory to install games and applications than Galaxy S4 Active, because it has a SD extension slot that admits a maximum of 512 GB and more internal storage capacity. The Galaxy M21 features a lot better camera than Samsung Galaxy S4 Active, because it has a way more mega-pixels camera and a much better (4K) video definition.
The Samsung Galaxy M21 counts with a way better battery lifetime than Galaxy S4 Active, because it has 6000mAh of battery capacity instead of 2600mAh.
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