Compare phones
| Global Score | |
| 85.5 | 85.3 |
| Basic Information | |
| Samsung | Microsoft |
| Android 11, 10 | Android 11 |
| 2019-12-27 | 2021-09-20 |
| 6.24 x 2.90 x 0.31 inches | 5.72 x 7.26 x 0.22 inches |
| 6.07 ounces | 10.02 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Glacier and Obsidian |
| Plastic and Plastic | Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | $ 540.00 |
| Display / Screen | |
| 6.5 inches | 8.3 inches |
| 2400 x 1080 pixels | 2688 x 1892 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 396 pixels per inch |
| -- | 800 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.8 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 888 SM8350 (5 nm) chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 12.00 MP + 12.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.55 | 10.01 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4449mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy A51 is slightly better than the Microsoft Surface Duo 2, with an 85.5 score against 85.3. These devices come with the same Android 11 operating system. Samsung Galaxy A51's design is extremely lighter than the Microsoft Surface Duo 2, but it's thicker and was released only 21 months before.
The Microsoft Surface Duo 2 features a bit sharper screen than Galaxy A51, because although it has a just a little less pixels per screen inch, it also counts with a bigger display and a higher 1892 x 2688 resolution. The Microsoft Surface Duo 2 features a little faster CPU than Samsung Galaxy A51, and although they both have a Octa-Core CPU, the Microsoft Surface Duo 2 also has a larger amount of RAM.
Samsung Galaxy A51 features a very superior memory capacity for apps and games than Microsoft Surface Duo 2, and although they both have the same internal memory capacity, the Samsung Galaxy A51 also has a SD extension slot that supports up to 512 GB. Galaxy A51 has a better camera than Microsoft Surface Duo 2, because although it has lower video frame rate and a smaller aperture, and they both have the same 3840x2160 (4K) video definition, the Galaxy A51 also counts with a way higher 48 mega-pixels resolution camera in the back.
Microsoft Surface Duo 2 counts with a little longer battery life than Samsung Galaxy A51, because it has 4449mAh of battery capacity instead of 4000mAh.
Despite of being the best phone in our comparison, the Galaxy A51 is also a bargain compared to the other phones, which makes this phone an obvious call.
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