Compare phones
| Global Score | |
| 78.8 | 84.1 |
| Basic Information | |
| Microsoft | Samsung |
| Android 10 | Android 11, 10 |
| 2020-09-10 | 2020-03-23 |
| 7.36 x 5.72 x 0.19 inches | 6.26 x 2.96 x 0.35 inches |
| 8.82 ounces | 6.63 ounces |
| Glacier | Midnight blue and Raven black |
| Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 540.00 | -- |
| Display / Screen | |
| 8.1 inches | 6.4 inches |
| 2700 x 1800 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 855 SM8150 chipset | Exynos 9611 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 640 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 11.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.91 | 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 | |
| 3577mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.52 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy M21 has a global score of 84.1, which is just a bit better than the Microsoft Surface Duo's 78.8 general score. Even though the Samsung Galaxy M21 and Microsoft Surface Duo were released only a couple of months apart, Samsung Galaxy M21's design is notably lighter but notably thicker than Microsoft Surface Duo. These phones include Android OS (Operating System), but Samsung Galaxy M21 has newer 11 version and Microsoft Surface Duo has Android 10 version, so it counts with some extra features and improved performance.
Samsung Galaxy M21 counts with a bit more vivid display than Microsoft Surface Duo, because although it has a much smaller display and a way worse resolution of 1080 x 2340 pixels, it also counts with a little bit greater number of pixels in each inch in the display. Microsoft Surface Duo features a bit more powerful processing unit than Samsung Galaxy M21, and although they both have 8 CPU cores, the Microsoft Surface Duo also has more RAM.
The Galaxy M21 features more memory capacity for applications and games than Microsoft Surface Duo, because although it has only 64 GB internal memory capacity, it also counts with an external memory slot that allows up to 512 GB. Galaxy M21 features a very superior battery duration than Microsoft Surface Duo, because it has a 6000mAh battery capacity instead of 3577mAh.
The Samsung Galaxy M21 captures much clearer photos and videos than Microsoft Surface Duo, because although it has lower video frame rate, and they both have the same aperture and the same video quality, the Samsung Galaxy M21 also counts with a camera in the back with lot more mega pixels.
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