The integration of map navigation throughout our Windows Phones can be a handy feature. From tapping on an address to a contact, in an email and now with Cortana, generating voice directions is but a tap away.
If you have multiple navigation apps installed on your Windows Phone you will be given a list of these apps to choose from when generating voice directions. That extra step in getting directions may not be a big deal to most, but there is a way to set one of your navigation apps as a default with Windows Phone 8.1 and avoid this step all together.
Full story from the WPCentral blog...
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