Compare phones
| Global Score | |
| 84.1 | 75.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-03-23 | 2017-01-13 |
| 6.26 x 2.96 x 0.35 inches | 5.75 x 2.81 x 0.31 inches |
| 6.63 ounces | 5.61 ounces |
| Midnight blue and Raven black | Black sky, Blue mist, Gold sand and Peach cloud |
| Plastic and Plastic | Glass and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 5.2 inches |
| 2340 x 1080 pixels | 1920 x 1080 pixels (Full HD) |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 424 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Exynos 9611 chipset | Samsung Exynos 7 Octa 7880 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1900 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Mali-G72 MP3 GPU | Mali-T830 MP3 GPU |
| 9.27 | 9 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 11.74 | 8.88 |
| 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 | 27.00mm 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 | -- |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G) and HSPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 5.5 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.2 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 is much better than the Samsung Galaxy A5 (2017), getting a overall score of 84.1 against 75.8. Even though Galaxy M21 is noticeably newer than Samsung Galaxy A5 (2017), it's thicker and somewhat heavier. Galaxy M21 has a little better performance than Samsung Galaxy A5 (2017), and although they both have a Octa-Core CPU, the Galaxy M21 also has a higher amount of RAM memory.
The Samsung Galaxy M21 has a little sharper screen than Samsung Galaxy A5 (2017), because although it has a little lower screen density, it also counts with a slightly better resolution of 1080 x 2340px and a larger screen. The Galaxy M21 has a very superior camera than Galaxy A5 (2017), because although it has a tinier diafragm aperture, it also counts with a camera in the back with a much better resolution and a much higher 3840x2160 video definition.
Galaxy M21 has a very superior memory to store more games and applications than Galaxy A5 (2017), because it has a slot for external memory cards that admits up to 512 GB and more internal storage capacity. Galaxy M21 counts with a way better battery performance than Galaxy A5 (2017), because it has 6000mAh of battery capacity instead of 3000mAh.
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