Microsoft Surface Duo 256 GB Specifications, Tests and Review

5.6", 1800 x 1350
Front Camera
11 Megapixel
Operating System
Android 10
256 GB
6 GB
Qualcomm Snapdragon 855
3577 mAh

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Complete technical specifications, details, expert ratings and review of Microsoft Surface Duo 256 GB. Find out how your chosen phone stacks up against the competition and whether it's the one that best meets your expectations with the phone comparison feature.

DESIGN AND DIMENSIONS Microsoft Surface Duo 256 GB
Product Type Smartphone
Form Factor Folder - dual screen
Height 145.2 mm Better than 62 % of phones rated.
Width 93.3 mm Better than 99 % of phones rated.
Depth 9.9 mm Better than 53 % of phones rated.
Weight 250 g Worse than 98 % of phones rated.
Dimensions Details Unfolded - 186.9 mm x 4.8 mm x 145.2 mm
Body Colour Glacier
Waterproof (Water-resistant) -
SAR Value 0.726 W/kg (head), 1.478 W/kg (body)
Connector Type USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Dual-SIM

The Microsoft Surface Duo 256 GB has a height of 145.2 mm, a width of 93.3 mm and a thickness of 9.9 mm. The weight of the phone is 250 g.

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DISPLAY Microsoft Surface Duo 256 GB
Display Type OLED display
Display Technology AMOLED
Foldable Display Yes
Display Design Both directions folding
Screen Size (Display Size) 5.6" Better than 70 % of phones rated.
Screen Resolution (Display Resolution) 1800 x 1350 pixels Better than 81 % of phones rated.
Pixel Density 401 ppi Better than 50 % of phones rated.
Aspect Ratio 4:3
Display Features PixelSense Fusion Displays
Display Protection (Screen Protector) Corning Gorilla Glass (scratch resistant glass)
Second Display Type OLED display - colour
Second Display Screen Size 5.6"
Second Display Resolution 1800 x 1350 pixels
Unfolded Display Screen Size 8.1 in
Unfolded Display Resolution 2700 x 1800 pixels

The screen size reaches 5.6" inches. With a large display, phone offers a great experience for watching videos, playing games and reading. The best phones today are 6.5'' or more. They have the advantage of a large display area that allows you to see more content than with conventional display sizes. Owing to OLED technology, the display offers a true representation of colours, especially black. The resulting contrast is significantly higher and colours appear more vivid. OLED technology is now part of most smartphones, while LCD displays are becoming a thing of the past in mobile phones. OLED displays also have lower power consumption compared to LCD technology.

Display Resolution of Microsoft Surface Duo 256 GB is 1800 x 1350 pixels. A higher display resolution is a prerequisite for a sharper image. The standard for mid-range phones today is a Full HD resolution of 1920 × 1080 px. Cheaper phones, which usually have a smaller diagonal, have an HD resolution of 1280 × 720 px. Smaller resolutions can only be found in older models. Best phones, on the other hand, have a 4K resolution of 3840 x 2160 px. Display´s pixel density is 401 ppi and represents another significant factor affecting image sharpness besides resolution. The higher the value, the sharper the image. Average value is currently about 350-400 ppi, which guarantees a fine and sufficiently sharp image. Finest modern phone displays reach 450 ppi and above.

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PROCESSOR Microsoft Surface Duo 256 GB
Processor Type (CPU) Qualcomm Snapdragon 855
Processor Core Qty 8-core Better than 99 % of phones rated.

Microsoft Surface Duo 256 GB is equipped with Qualcomm Snapdragon 855. The number of processor cores is 8. It is a number of cores that plays an important role in evaluating the performance of phone as it is responsible for computing operations. Smartphones already commonly have a core count of around 4 to 8. Multi-core processors can perform better and reduce the processing time of a request to a minimum, which is reflected in the responsiveness of the phone, e.g. in the speed of opening applications.

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MEMORY Microsoft Surface Duo 256 GB
RAM 6 GB Better than 85 % of phones rated.
Internal Memory Size (Storage Capacity) 256 GB Better than 98 % of phones rated.
Memory Interface UFS 3.0

The phone´s internal memory capacity is 256 GB. The size of the internal storage determines e.g., how many photos, songs, movies, or applications you can store on your phone. Best phones like this one have 256 GB to 1 TB of memory, which is already enough for even the most demanding geeks who use the phone to create videos, take high-resolution photos and play more demanding games. The downside is that with most phones, you'll have to pay extra for that kind of storage capacity. Luckily, most smartphone manufacturers nowadays offer models with different memory sizes to suit every user.

RAM memory of the Microsoft Surface Duo 256 GB is 6 GB. Most powerful phones currently have an operating memory of 12 GB or more, which is especially useful for demanding users such as gaming enthusiasts. Normally, phones nowadays have 6 to 8 GB of RAM, which means that the phone can easily handle normal operation and more demanding applications. Operating memory of less than 4 GB is found in lower-end phones or older models, and they are suitable for low-end users who don't use demanding applications and have the phone more for basic use.

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CAMERA Microsoft Surface Duo 256 GB
Number of Main Cameras 0
Number of Front Cameras 1
Sensor Resolution (Front) 11 Megapixel Better than 71 % of phones rated.
Lens Aperture (Front) F/2.0 Better than 89 % of phones rated.
Field of View (Front) 84 degree(s) Better than 81 % of phones rated.
Pixel Size (Front) 1 μm
Special Effects (Front) HDR
Camera Modes (Front) Burst mode, Panorama, low-light shots, Portrait mode with adjustable depth control
Light Source (Front) High CRI LED flash
Video Resolutions (Front) 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps
Camera Features (Front) Phase Detect Auto-Focus (PDAF), FOV optimised with AI (for front and rear), dynamic range scene detection, Super-resolution zoom, super zoom up to 7x, gyro-based digital video stabilisation

Front camera
The front camera of phone Microsoft Surface Duo 256 GB has one lens. This number of lenses is standard on most smartphones nowadays. The resolution of front lens reaches 11 Megapixel. Again, it should be noted that resolution is only one of several other significant factors that affect resulting quality of a photo. The pixel size itself is 1 μm. The main lens is also equipped with aperture of F/2.0. The field of view of front camera is 84 degree(s).

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BATTERY AND CHARGING Microsoft Surface Duo 256 GB
Battery Capacity (Battery Size) 3577 mAh Better than 78 % of phones rated.
Standby Time 240 hours Worse than 77 % of phones rated.
Talk Time 1620 minutes Better than 89 % of phones rated.
Run Time Details Standby: up to 240 hrs
Talk: up to 1620 min
Playback (local video): up to 15.5 hrs

The battery size of Microsoft Surface Duo 256 GB is 3577 mAh. Nevertheless, battery capacity is not the only factor that affects the phone's battery life. For example - the size of the display, the performance of the processor, the use of data functions and, of course, the intensity of use of phone in general all have a significant impact on battery life. Standard for most smartphones today is a battery capacity of around 4500 to 5000 mAH. Phones with this battery size usually guarantee a phone life of at least 1 day. Older or cheaper smartphone models can then reach battery capacities typically around 2500 mAH and below. With this capacity, you may find that if you use your phone heavily, you may need to recharge your phone during the day.

Standby time is 240 hours and it expresses the maximum time your phone can last on a single charge when you are not actively using it. Talk time, or we can say battery life when making calls, then indicates amount of time your phone will last from a full charge if you are constantly on a call. Microsoft Surface Duo 256 GB is provided with a talk time about 1620 minutes.

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CELLULAR Microsoft Surface Duo 256 GB
Technology WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G Better than 88 % of phones rated.
Operating System Android 10
Intelligent Assistant Google Assistant
Navigation GPS, GLONASS, BeiDou, Galileo, QZSS

Microsoft Surface Duo 256 GB supports 4G. 5G connectivity, which is slowly replacing standard 4G connectivity, is still more the preserve of the latest phones. The operating system in this case is Android 10.

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COMMUNICATIONS Microsoft Surface Duo 256 GB
Data Transmission GPRS, FDD-LTE, TDD-LTE, LAA
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 19, Band 20, Band 25, Band 26, Band 28, Band 29, Band 30, Band 38, Band 39, Band 40, Band 41, Band 46, Band 66
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700 PS, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 700d, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 5150, FDD 1700 - 2110 AWS-3
Wireless Interface IEEE 802.11ac
Bluetooth Bluetooth 5.0

Basic connectivity standards also include Bluetooth 5.0, making it easy to communicate wirelessly with other devices such as headphones, tablets, speakers and smartwatches.

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MEDIA Microsoft Surface Duo 256 GB
Supported Digital Audio Standards WAV, AAC, AMR, MP3, FLAC, OGG, MIDI, M4A, apt-X, IMY, RTTTL, RTX, OTA, MID
Supported Digital Video Standards MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4
Sound Enhancements Qualcomm aptX audio
FEATURES Microsoft Surface Duo 256 GB
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Proximity sensor, hall sensor, dual accelerometers, dual gyroscope, dual magnetometer, dual ambient light sensor
Security Devices Fingerprint reader (side)
Additional Phone Features MIMO technology, Fast Charging, dual microphones with noise suppression and echo cancellation, Full Duplex communication, 360° hinge, stylus support, two apps side-by-side
OTHERS Microsoft Surface Duo 256 GB
Included Accessories SIM card removal tool, USB-C headphones, 18W charger, Surface Duo Bumper (Glacier)

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