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[1] Additional fees and/or subscriptions required for some apps and features. Available apps may vary by carrier and over time. 
[2] Requires download of the Your Phone app from the Windows store on a Windows 10 PC with the latest Windows updates. 
[3] Sold separately.
[4] Drag and drop only available on supported apps.

Offer valid from February 18, 2021 to 11:59PM PT June 30, 2021, while supplies last. Available only in Microsoft online and retail store in United States (including Puerto Rico). Not valid on prior orders or purchases; cannot be transferred or otherwise redeemed for cash or promo code(s). May not be combinable with other offers. Microsoft Store returns policy applies. Discounted products bought with a qualifying product must be returned if the qualifying product is returned. Refunds will take into account the discount. Price discount does not include taxes, shipping or other fees. Void where prohibited or restricted by law. Microsoft reserves the right to modify or discontinue offers at any time. Other exclusions and limits may apply.

[1] Some devices, accessories, and software sold separately. Additional fees and/or subscriptions required for some apps and features. Some features, including drag and drop between screens, available in supported apps only. Available apps may vary by carrier and over time. Calling requires data plan; see carrier for pricing and coverage details.
[2] Requires download of the Your Phone app from the Windows store on a Windows 10 PC with the latest Windows updates. 
[3] Excluding Surface Duo Bumper. 
[4] Testing conducted by Microsoft in August 2020 using preproduction Surface Duo units and software over Wi-Fi with LTE associated to a network. Testing consisted of full battery discharge during active use scenarios and a power drain measurement in Suspend. The active use scenarios excluded cell calls and included both single screen and dual screen scenarios, consisting of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) productivity tests utilizing Microsoft Teams audio and video calls and Microsoft Word, PowerPoint, Excel and Outlook, (3) sending and receiving SMS text messages, and (4) streaming a video through the YouTube app. All settings were default except Adaptive Brightness was disabled, and screen was set to 150nits. Battery life varies significantly with network and feature configuration, signal strength, settings, usage and other factors. Battery has limited recharge cycles and cannot be replaced. 
[5] Local Video Playback: Testing conducted by Microsoft in July 2020 using preproduction Surface Duo units and software. Testing consisted of full battery discharge during local video playback on a single screen. Video playback consisted of a repeated 30-minute .mp4 file in 1080p at 24 fps. All settings were default except: LTE and Wi-Fi were both associated with a network with ‘ask to join’ disabled and Adaptive Brightness was disabled, screen was set to 100 nits. Battery life varies significantly with network and feature configuration, signal strength, settings, usage, and other factors. Battery has limited recharge cycles and cannot be replaced. 
[6] Talk Time: Testing conducted by Microsoft in July 2020 in an AT&T Validated Lab using preproduction Surface Duo units and software. Testing conducted in accordance with AT&T requirements and test specifications. All settings were default, and network settings were: connected to LTE, and Wi-Fi was enabled but not connected. Battery life varies significantly with network and feature configuration, signal strength, settings, usage and other factors. Battery has limited recharge cycles and cannot be replaced.
[7] Standby Time: Testing conducted by Microsoft in July 2020 in an AT&T Validated Lab using preproduction Surface Duo units and software. Testing conducted in accordance with AT&T requirements and test specifications.  All settings were default, and network settings were: connected to LTE, and Wi-Fi was enabled but not connected. Battery life varies significantly with network and feature configuration, signal strength, settings, usage and other factors. Battery has limited recharge cycles and cannot be replaced.
[8] Specified minimum dual battery capacity is 3462mAh
[9] T-Mobile customers coming from Sprint’s network require a T-Mobile SIM card. Verizon Wireless compatibility expected in September.  
[10] Use of eSIM requires a wireless service plan (which may include restrictions on switching service providers and roaming, even after contract expiration). Not all carriers support eSIM. Use of eSIM in Surface Duo may be disabled when purchased from some carriers. See your carrier for details.
[11] System software uses significant storage space. Available storage is subject to change based on system software updates and apps usage. 1 GB = 1 Gigabyte. 1 TB = 1,000 GB. See Surface.com/Storage for more details.
[12] Some apps and features may require a wireless plan, additional subscriptions, or fees.
[13] Video playback formats will require 3rd party apps from the Google Play Store; fees may apply.
[14] Microsoft’s Limited Warranty is in addition to your consumer law rights.