I want the sound to go *here* – Audio routing in Windows Phone 8.1

Windows Phone 8.1 devices have a number of different audio output options. Most of the time the audio is routed to the default or “active” endpoint. The default endpoint is determined by a number of factors. If your phone is connected to a Bluetooth device that supports audio then it will be routed there by…


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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Game Development Middleware - What is it? Do I need it?

This is a companion text blog to the video blog that will  be released on Channel 9 next week. I wanted to also make this information available for search engines to pick up. I’ll update this blog with a link to the video as soon as it is published. I’ve been a direct to DirectX purest…


Frequently asked questions about Windows Phone Company Hub apps

  Here are the answers to some of the most commonly asked questions regarding Windows Phone company hub apps, AET token and certificates. The following applies to both Windows Phone 8.0 and 8.1 1. Can we sign Company hub apps using self-signed certificate or any other third party certificates? Enterprise Mobile Code signing certificate from…

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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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Why can’t the Windows Phone Emulator go online?

I recently had an opportunity to work on a scenario where the Windows Phone 8 Emulator is not able to connect to the internet. Usually, one wouldn’t notice until you deploy a Phone App on the Emulator through Visual Studio and it won’t connect to web services, internet, etc. To confirm if it is the…

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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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