Compare phones
| Global Score | |
| 85.2 | 78.8 |
| Basic Information | |
| Samsung | Microsoft |
| -- | Android 10 |
| 2018-11-15 | 2020-09-10 |
| 6.40 x 3.03 x 0.31 inches | 7.36 x 5.72 x 0.19 inches |
| 6.46 ounces | 8.82 ounces |
| Bubblegum pink, Caviar black and Lemonade blue | Glacier |
| Glass and Metal | Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| -- | $ 540.00 |
| Display / Screen | |
| 6.3 inches | 8.1 inches |
| 2220 x 1080 pixels | 2700 x 1800 pixels |
| Super AMOLED | AMOLED |
| 392 pixels per inch | 401 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Qualcomm Snapdragon 855 SM8150 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Adreno 512 GPU | Adreno 640 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 | |
| 24.00 MP + 24.00 MP | 11.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 27.00mm focal length | -- |
| 0.36 inches (1/2.8") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 10.45 | 8.91 |
| 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 | |
| 3800mAh Li - Polymer Battery | 3577mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.76 | 5.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| 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
Samsung Galaxy A9 (2018) is slightly better than Microsoft Surface Duo, getting an 85.2 score against 78.8. Samsung Galaxy A9 (2018) is an older and much thicker cellphone than the Microsoft Surface Duo, but Samsung was able to make it noticeably lighter anyway. The Microsoft Surface Duo counts with a bit better display than Samsung Galaxy A9 (2018), because it has a lot higher resolution of 1800 x 2700px, a just a bit more pixels per inch of display and a larger screen.
Galaxy A9 (2018) has a way bigger storage for applications, games, photos and videos than Microsoft Surface Duo, and although they both have exactly the same 128 GB internal storage, the Galaxy A9 (2018) also has an external memory card slot that supports up to 512 GB. Microsoft Surface Duo counts with a bit more powerful CPU than Galaxy A9 (2018). They have a Octa-Core CPU and a 6 GB RAM memory.
The Galaxy A9 (2018) has just a little better battery life than Microsoft Surface Duo, because it has a 6 percent larger battery size. Galaxy A9 (2018) shoots much clearer pictures and videos than Microsoft Surface Duo, because although it has lower video frame rate, and they both have the same 3840x2160 video definition, the Galaxy A9 (2018) also counts with a camera in the back with a way higher 24 mega pixels resolution and a larger aperture for better images and videos in low-light environments.
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