Compare phones
| Global Score | |
| 84.1 | 79.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-03-23 | 2016-03-11 |
| 6.26 x 2.96 x 0.35 inches | 5.61 x 2.74 x 0.31 inches |
| 6.63 ounces | 5.36 ounces |
| Midnight blue and Raven black | Black, Gold, Pink, Pink gold, Silver and White |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 4) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 124.00 |
| Display / Screen | |
| 6.4 inches | 5.1 inches |
| 2340 x 1080 pixels | 2560 x 1440 pixels (Quad HD / 2K) |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 576 pixels per inch |
| 420 cd/m2 brightness | 855 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.6 |
| 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), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 4.96 |
| 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 an overall score of 84.1, which is a bit better than Galaxy S7's score of 79.5. Galaxy M21 is a extremely newer cellphone than the Galaxy S7, but it's thicker and heavier. Samsung Galaxy S7 has a much better screen than Galaxy M21, because although it has a much smaller screen, it also counts with a higher resolution of 1440 x 2560 pixels, a really brighter display and a greater pixels density.
The Galaxy M21 has a bit better performance than Galaxy S7, and although they both have a 4 GB RAM, the Galaxy M21 also has a larger number of cores. Galaxy M21 features a very superior memory capacity to install applications and games than Galaxy S7, because it has a SD extension slot that admits up to 512 GB and 64 GB internal memory.
Samsung Galaxy M21 features a way better battery duration than Galaxy S7, because it has a 100% greater battery size. Samsung Galaxy M21 features a superior camera than Galaxy S7, because although it has a tinier aperture, and they both have the same video frame rates and the same (4K) video definition, the Samsung Galaxy M21 also counts with a camera in the back with way more MP and a larger sensor providing a higher image quality.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.