Compare phones
| Global Score | |
| 84.1 | 78.9 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 10, 9.0 Pie, 8.1 Oreo |
| 2020-03-23 | 2019-02-05 |
| 6.26 x 2.96 x 0.35 inches | 6.16 x 2.93 x 0.35 inches |
| 6.63 ounces | 6.56 ounces |
| Midnight blue and Raven black | Charcoal black and Ocean blue |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.4 inches | 6.3 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 409 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8 |
| Performance | |
| Exynos 9611 chipset | Samsung Exynos 7 Octa 7904 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Mali-G71 MP2 GPU |
| 9.27 | 8.91 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 11.74 |
| Camera | |
| 48.00 MP + 20.00 MP | 13.00 MP + 8.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | 12.00mm focal length |
| 0.5 inches (1/2") sensor | 0.32 inches (1/3.1") 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 | 9.02 |
| 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 | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M21 has an overall score of 84.1, which is a bit better than Galaxy M20's 78.9 general score. The Galaxy M21 is a just a little bit heavier phone than the Galaxy M20, but both of them are 0.35inches thick. Both phones we compare here come with Android operating system, but Galaxy M21 has a newer 11 version and Galaxy M20 has Android 10.
Galaxy M21 counts with a bit better screen than Galaxy M20, because although it has a little less pixels per display inch, and they both have exactly the same 1080 x 2340 resolution, the Galaxy M21 also counts with a little bigger display. The Galaxy M20 counts with as much storage for applications, games, photos and videos as Galaxy M21, both have equal 64 GB internal storage and a SD memory slot that supports up to 512 GB.
The Galaxy M21 features a bit more powerful CPU than Samsung Galaxy M20. They have a Octa-Core processor and the same RAM memory amount. Samsung Galaxy M21 features better battery lifetime than Galaxy M20, because it has a 20 percent bigger battery capacity. The Galaxy M21 captures much better pictures and videos than Samsung Galaxy M20, because although it has a smaller diafragm aperture, it also counts with a camera with a lot better 48 mega pixels resolution, a lot larger back camera sensor and a lot better video definition.
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