Compare phones
| Global Score | |
| 84.1 | 78.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 8.0 Oreo, 7.0 Nougat, 6.0 Marshmallow |
| 2020-03-23 | 2016-03-11 |
| 6.26 x 2.96 x 0.35 inches | 5.94 x 2.86 x 0.30 inches |
| 6.63 ounces | 5.54 ounces |
| Midnight blue and Raven black | Black, Black pearl, Coral blue, Gold, Pink gold, Silver and White |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 4) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 336.00 |
| Display / Screen | |
| 6.4 inches | 5.5 inches |
| 2340 x 1080 pixels | 2560 x 1440 pixels (Quad HD / 2K) |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 534 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.6 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 820 MSM8996 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo, 64-bit, 14 nm (Quad-Core 2200 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Adreno 530 GPU |
| 9.27 | 9 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 200 GB) external memory slot |
| 11.74 | 8.56 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.00 MP + 5.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.4 inches (1/2.5") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 11.55 | 9.79 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | 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 |
| 6.7 | 6.1 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3600mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 5.6 |
| 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 | -- |
Comparison review
Galaxy M21 has a general score of 84.1, which is a little bit better than Galaxy S7 edge's score of 78.1. Both phones in our current comparison use Android operating system, but the Galaxy M21 has the older 11 version while Galaxy S7 edge has Android 8.0 Oreo version. Galaxy M21's design is way newer, but somewhat heavier and thicker than the Galaxy S7 edge.
Samsung Galaxy S7 edge features just a bit better display than Samsung Galaxy M21, because although it has a quite smaller screen, it also counts with a better 1440 x 2560px resolution and a higher screen density. The Samsung Galaxy M21 has a way bigger memory capacity for applications and games than Galaxy S7 edge, because it has 64 GB internal storage and a slot for SD memory cards that holds a maximum of 512 GB.
Galaxy M21 counts with a little bit better performance than Galaxy S7 edge, and although they both have a 4 GB RAM, the Galaxy M21 also has a higher number of faster cores. The Galaxy M21 shoots better photos and videos than Galaxy S7 edge, because although it has a tinier diafragm aperture, and they both have the same 30 frames per second video frame rates and the same video resolution, the Galaxy M21 also counts with a bigger back camera sensor taking more light and vivid colors and a lot more mega-pixels back facing camera.
The Galaxy M21 has a superior battery duration than Galaxy S7 edge, because it has a 6000mAh battery size.
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