Compare phones
| Global Score | |
| 84.1 | 81 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 6.0 Marshmallow |
| 2020-03-23 | 2017-02-24 |
| 6.26 x 2.96 x 0.35 inches | 6.41 x 3.18 x 0.27 inches |
| 6.63 ounces | 6.63 ounces |
| Midnight blue and Raven black | Black and Gold |
| Plastic and Plastic | Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6 inches |
| 2340 x 1080 pixels | 1920 x 1080 pixels (Full HD) |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 367 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 7.8 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 653 8976 Pro chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A72 and ARM Cortex-A53, 64-bit, 28 nm (Octa-Core 1950 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 510 GPU |
| 9.27 | 9.09 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 11.74 | 10.78 |
| Camera | |
| 48.00 MP + 20.00 MP | 16.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 11.55 | 9.24 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.2 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M21 has a global score of 84.1, which is just a bit better than Galaxy C9 Pro's global score of 81. Both of these phones use Android operating system, but the Galaxy M21 has older 11 version while Galaxy C9 Pro has Android 6.0 Marshmallow. The Galaxy M21 design weights the same than the Galaxy C9 Pro, but it is thicker.
Galaxy M21 features a little more vivid screen than Samsung Galaxy C9 Pro, because it has a little bit bigger display, a little higher number of pixels in each inch in the screen and a little higher resolution of 1080 x 2340 pixels. Galaxy M21 features a little faster processor than Galaxy C9 Pro, although it has a smaller amount of RAM, they both have 8 cpu cores.
The Samsung Galaxy M21 takes much better photographs and videos than Galaxy C9 Pro, because although it has a smaller diafragm aperture, it also counts with a much more mega pixels back facing camera and a much higher 3840x2160 video quality. The Galaxy M21 has a slightly better storage for applications and games than Samsung Galaxy C9 Pro, and although they both have exactly the same 64 GB internal storage, the Galaxy M21 also has a slot for external memory cards that holds up to 512 GB.
The Galaxy M21 counts with a much longer battery lifetime than Galaxy C9 Pro, because it has 6000mAh of battery capacity against 4000mAh.
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