Compare phones
| Global Score | |
| 85.3 | 84.1 |
| Basic Information | |
| Microsoft | Samsung |
| Android 11 | Android 11, 10 |
| 2021-09-20 | 2020-03-23 |
| 5.72 x 7.26 x 0.22 inches | 6.26 x 2.96 x 0.35 inches |
| 10.02 ounces | 6.63 ounces |
| Glacier and Obsidian | Midnight blue and Raven black |
| Glass (Corning Gorilla Glass) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 540.00 | -- |
| Display / Screen | |
| 8.3 inches | 6.4 inches |
| 2688 x 1892 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 396 pixels per inch | 403 pixels per inch |
| 800 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.8 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 888 SM8350 (5 nm) chipset | Exynos 9611 chipset |
| Kryo 680, 64-bit (Octa-Core 2840 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 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 | |
| 12.00 MP + 12.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 27.00mm focal length | 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 | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.01 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4449mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 7.52 |
| Other Features | |
| Bluetooth 5.1 | 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
Microsoft Surface Duo 2 has a score of 85.3, which is a bit better than Galaxy M21's score of 84.1. These phones work with the same Android 11 operating system, so you shouldn't see any differences regarding OS features. Microsoft Surface Duo 2 is a newer and much thinner device than the Galaxy M21, but it is also a lot heavier.
Microsoft Surface Duo 2 has a bit more powerful processor than Galaxy M21, and although they both have the same number of cores, the Microsoft Surface Duo 2 also has a larger amount of RAM memory. The Microsoft Surface Duo 2 has a slightly better looking display than Galaxy M21, because although it has a just a little inferior amount of pixels per inch in the screen, it also counts with much more display brightness, a way higher resolution of 1892 x 2688 and a bigger display.
Galaxy M21 features a bigger memory to install applications and games than Microsoft Surface Duo 2, because although it has just 64 GB internal storage, it also counts with a slot for an SD memory card that admits a maximum of 512 GB. The Galaxy M21 counts with longer battery performance than Microsoft Surface Duo 2, because it has 6000mAh of battery capacity.
The Galaxy M21 features a much better camera than Microsoft Surface Duo 2, because although it has lower 30 fps video frame rates and a tinier diafragm aperture, and they both have the same (4K) video definition, the Galaxy M21 also counts with a much better 48 megapixels resolution camera.
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