Compare phones
| Global Score | |
| 78.9 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10, 9.0 Pie, 8.1 Oreo | Android 11, 10 |
| 2019-02-05 | 2020-03-23 |
| 6.16 x 2.93 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.56 ounces | 6.63 ounces |
| Charcoal black and Ocean blue | Midnight blue and Raven black |
| Plastic and Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.3 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 409 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.4 |
| Performance | |
| Samsung Exynos 7 Octa 7904 chipset | Exynos 9611 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G71 MP2 GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| 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 | |
| 13.00 MP + 8.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 12.00mm focal length | 26.00mm focal length |
| 0.32 inches (1/3.1") sensor | 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 |
| 9.02 | 11.55 |
| 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 | |
| 5000mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 has a general score of 84.1, which is a little bit better than Galaxy M20's general score of 78.9. Galaxy M21's body has the same thickness than Galaxy M20, but it is just a little bit heavier. Both phones in our current comparison work with Android operating system, but Galaxy M21 has 11 version and Galaxy M20 has Android 10 version, so it provides you some nice extra features and increased performance.
Samsung Galaxy M21 counts with a little better hardware performance than Samsung Galaxy M20. Both of them have 4 GB of RAM memory and 8 CPU cores. The Galaxy M21 has a little bit better looking screen than Samsung Galaxy M20, because although it has a little less pixels per screen inch, and they both have the same exact 1080 x 2340 resolution, the Galaxy M21 also counts with a little larger display.
The Samsung Galaxy M21 features a very superior camera than Samsung Galaxy M20, because although it has a tinier aperture, it also counts with a way better (4K) video quality, a much larger sensor shooting much better quality videos and photographs and a much higher 48 mega-pixels resolution back-facing camera.
The Galaxy M21 and Galaxy M20 count with quite similar memory capacity for applications, games, photos and videos, both of them have an external SD slot that admits a maximum of 512 GB and the same 64 GB internal storage capacity. Galaxy M21 has superior battery life than Samsung Galaxy M20, because it has a 6000mAh battery size against 5000mAh.
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