Windows Phone 8.1 Battery Saver, Background Agents, and Background Tasks

I worked a support case recently where the customer had a Windows Phone Silverlight 8.0 background agent running on Windows Phone 8.1.  My customer noticed that the background agents would not run when battery saver was enabled. In order to explain why this was happening, I first need to tell you some of the history…

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Capturing raw PCM audio on Windows Phone 8 and 8.1

There are a number of different audio capture and playback APIs on Windows Phone 8.x. Unfortunately If you want to get at the raw PCM data and process it in near real time your options are limited. While it is possible to capture raw PCM audio from managed code it is not recommended and likely…


Windows Phone Camera Preview Deadlock when leaving page.

  I recently investigated a Windows Phone problem, reported by one of our forum contributors, in which an application encounters a dead-lock scenario when navigating away from a page which is rendering a preview stream from the camera.  I found that the deadlock condition was triggered when the VideoBrush object was disposed on the UI…

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Common issues when implementing Windows Phone 8 Enterprise Mobile Device Management.

This blog describes a number of common issues encountered when implementing Windows Phone 8 Enterprise Mobile Device Management protocol along with troubleshooting tips which ISVs can use.  TIP: check the download link regularly to see if the documentation has been updated and some of the information below may have already been added to the documentation…

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How to store JSON data in Windows Phone 8

There have been a couple of forum questions on how to store JSON data and retrieve it in Windows Phone 8.  This post will explain how to do this with a simple example.  As a bonus I will show the code you can use to store a List of objects! JSON serialization is a great…

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Top 5 commonly encountered issues and possible solutions using the Windows Phone 8 Emulator

The following blog discusses the most commonly seen issues that we have seen through customer issues on the forums. The topics covered in this blog is a collection of known issues and possible resolutions that customers have used to resolve their issues. 1.) What hardware/software is necessary to run the Windows Phone 8 emulator? The…


Developing an app for both Windows Store and Windows Phone 8 platforms

This article surveys various approaches in porting an application for use in the Windows Store and Windows Phone platforms. The Windows Phone 8 and Windows 8 – building together article identifies some benefits of this approach. You can plan in advance to ensure that the programming technologies that you use are compatible in the desired…


Your Windows Phone 7/8 application tests fine, but fails after publishing to Marketplace or after private app distribution

*EDIT* 20 June 2013 This information has since been amended and published as KB Article 2859130. So, you tested your application using the Windows Phone SDK tools. Everything ran flawlessly. You publish your app. You download your published app. Users download your app and report that the app crashes during its splash screen on start-up. What to…


Windows Phone 8: Steps to acquire an Enterprise Mobile Code Signing Certificate required to sign LOB or company apps

If you are developing a Windows Phone 8 LOB application to distribute to the users in your company, then the company must acquire an enterprise mobile code signing certificate from Symantec. The company needs this certificate to generate an Application Enrollment Token (AET) and sign company apps. Here are step-by-step instructions to acquire an enterprise certificate from Symantec for use on Windows…

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