Compare phones
| Global Score | |
| 78.1 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo, 7.0 Nougat, 6.0 Marshmallow | Android 11, 10 |
| 2016-03-11 | 2020-03-23 |
| 5.94 x 2.86 x 0.30 inches | 6.26 x 2.96 x 0.35 inches |
| 5.54 ounces | 6.63 ounces |
| Black, Black pearl, Coral blue, Gold, Pink gold, Silver and White | Midnight blue and Raven black |
| Aluminum and Glass (Corning Gorilla Glass 4) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 336.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 2560 x 1440 pixels (Quad HD / 2K) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 534 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.6 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 820 MSM8996 chipset | Exynos 9611 chipset |
| Kryo, 64-bit, 14 nm (Quad-Core 2200 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 530 GPU | Mali-G72 MP3 GPU |
| 9 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 200 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.56 | 11.74 |
| Camera | |
| 12.00 MP + 5.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.4 inches (1/2.5") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.79 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3600mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.6 | 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 |
Comparison review
Galaxy M21 is slightly better than Galaxy S7 edge, getting an 84.1 score against 78.1. The Galaxy M21 body is noticeably newer, but somewhat heavier and thicker than Galaxy S7 edge. Both of these phones include Android OS (operating system), but Galaxy M21 has an older 11 version while Galaxy S7 edge has Android 8.0 Oreo version.
The Galaxy S7 edge has a little more vivid screen than Galaxy M21, because although it has a quite smaller display, it also counts with a higher resolution of 1440 x 2560 and more pixels per display inch. The Galaxy M21 features a bit faster CPU than Galaxy S7 edge, and although they both have 4 GB of RAM, the Galaxy M21 also has a greater number of faster cores.
The Galaxy M21 shoots much clearer photographs and videos than Galaxy S7 edge, because although it has a tinier diafragm aperture which is not nice for shooting photographs and/or video in poorly lited situations, and they both have the same 30 frames per second video frame rates and the same video quality, the Galaxy M21 also counts with a much better resolution back camera and a larger back-facing camera sensor shooting higher quality videos and photographs.
Galaxy M21 features a much greater memory capacity to install applications and games or saving photos and videos than Samsung Galaxy S7 edge, because it has a slot for SD memory cards that allows a maximum of 512 GB and 64 GB internal storage capacity. Galaxy M21 has a very superior battery life than Galaxy S7 edge, because it has a 6000mAh battery size.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.