Compare phones
| Global Score | |
| 75.8 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11, 10 |
| 2017-01-13 | 2020-03-23 |
| 5.75 x 2.81 x 0.31 inches | 6.26 x 2.96 x 0.35 inches |
| 5.61 ounces | 6.63 ounces |
| Black sky, Blue mist, Gold sand and Peach cloud | Midnight blue and Raven black |
| Glass and Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.2 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 424 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| Samsung Exynos 7 Octa 7880 chipset | Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1900 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali-T830 MP3 GPU | Mali-G72 MP3 GPU |
| 9 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 11.74 |
| Camera | |
| 16.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.24 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| -- | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 5.5 | 6.7 |
| Battery Life | |
| 3000mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 4.96 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Samsung Galaxy M21 is much better than the Galaxy A5 (2017), getting a global score of 84.1 against 75.8. The Samsung Galaxy M21 construction is newer, but somewhat thicker and somewhat heavier than the Galaxy A5 (2017). Galaxy M21 has a little faster processor than Samsung Galaxy A5 (2017), and although they both have the same number of cores, the Galaxy M21 also has 1 GB more RAM memory.
Galaxy M21 features a little sharper display than Galaxy A5 (2017), because although it has a little bit worse pixel density, it also counts with a bigger screen and a slightly higher 1080 x 2340 pixels resolution. Galaxy M21 features a lot better camera than Galaxy A5 (2017), because although it has a smaller aperture which is not favorable for low light captures and video, it also counts with a way better video quality and a camera with lot more mega-pixels.
The Samsung Galaxy M21 features a much better memory for games and applications than Galaxy A5 (2017), because it has 64 GB internal memory and a SD memory card expansion slot that allows up to 512 GB. Galaxy M21 counts with a very superior battery duration than Samsung Galaxy A5 (2017), because it has a 100 percent greater battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.