Compare phones
| Global Score | |
| 84.1 | 80.9 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 5.0 |
| 2020-03-23 | -- |
| 6.26 x 2.96 x 0.35 inches | 5.78 x 2.90 x 0.35 inches |
| 6.63 ounces | -- |
| Midnight blue and Raven black | -- |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 245.00 |
| Display / Screen | |
| 6.4 inches | 5.1 inches |
| 2340 x 1080 pixels | 1440 x 2560 pixels (Quad HD / 2K) |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 576 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | Capacitive, Multi-touch |
| 8.4 | 9.9 |
| Performance | |
| Exynos 9611 chipset | Exynos 7 Octa 7420 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor |
| 4 GB RAM | 3 GB (1600 MHz) RAM |
| Mali-G72 MP3 GPU | Mali-T760 MP8 (650 MHz) GPU |
| 9.27 | 10.08 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSD external memory slot |
| 11.74 | 5.8 |
| Camera | |
| 48.00 MP + 20.00 MP | 16.00 MP + 5.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.38 inches (1/2.6") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 11.55 | 8.47 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE (4G), HSPA, HSUPA, UMTS, EDGE, GPRS and GSM |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3500mAh Battery |
| Non-Removable Battery | Removable Battery |
| 7.52 | 5.44 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.1 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy M21 is just a bit better than the Samsung Galaxy S6 Active, having a general score of 84.1 against 80.9. These devices work with Android OS (operating system), but the Galaxy M21 has a newer 11 version while Samsung Galaxy S6 Active has Android 5.0. The Galaxy M21 is a extremely heavier phone than the Samsung Galaxy S6 Active, but both have the same thickness.
Samsung Galaxy S6 Active features a much better looking screen than Galaxy M21, because although it has a really smaller display, it also counts with a greater pixels quantity in each inch of screen and a higher 2560 x 1440px resolution. Galaxy S6 Active features a bit more powerful CPU than Galaxy M21, because although it has a smaller amount of RAM, and they both have 8 processing cores, the Galaxy S6 Active also counts with a GPU and a 64 bits processor.
The Galaxy M21 counts with a greater camera than Samsung Galaxy S6 Active, because although it has a tinier diafragm aperture, and they both have the same video frame rates and the same 3840x2160 (4K) video resolution, the Galaxy M21 also counts with a lot better 48 MP resolution camera in the back and a lot larger sensor which offers a way higher image and video quality.
The Samsung Galaxy M21 counts with a very superior memory capacity for games and applications than Galaxy S6 Active, because it has 64 GB internal storage. The Galaxy M21 has a way better battery performance than Samsung Galaxy S6 Active, because it has a 6000mAh battery capacity.
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