Compare phones
| Global Score | |
| 79.5 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11, 10 |
| 2016-03-11 | 2020-03-23 |
| 5.61 x 2.74 x 0.31 inches | 6.26 x 2.96 x 0.35 inches |
| 5.36 ounces | 6.63 ounces |
| Black, Gold, Pink, 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 |
| $ 124.00 | -- |
| Display / Screen | |
| 5.1 inches | 6.4 inches |
| 2560 x 1440 pixels (Quad HD / 2K) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 576 pixels per inch | 403 pixels per inch |
| 855 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.6 | 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), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3000mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 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 |
Comparison review
Galaxy M21 is a little bit better than Galaxy S7, getting a score of 84.1 against 79.5. Although Galaxy M21 is incredibly newer than Galaxy S7, it is heavier and somewhat thicker. Galaxy M21 has just a little better performance than Samsung Galaxy S7, and although they both have the same RAM amount, the Galaxy M21 also has a larger number of faster cores.
Galaxy S7 has a much better looking screen than Galaxy M21, because although it has a lot smaller display, it also counts with much more brightness, a greater amount of pixels per inch of display and a better 1440 x 2560 pixels resolution. Galaxy M21 has a much greater memory capacity for games and applications than Galaxy S7, because it has a SD extension slot that admits a maximum of 512 GB and 32 GB more internal memory.
Galaxy M21 features a much better camera than Galaxy S7, because although it has a smaller aperture, and they both have the same 3840x2160 (4K) video resolution and the same video frame rate, the Galaxy M21 also counts with a bigger camera sensor providing a better image quality and a back camera with a lot higher resolution.
The Galaxy M21 counts with a very superior battery duration than Samsung Galaxy S7, because it has a 6000mAh battery capacity instead of 3000mAh.
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