Supported features for Windows Phone Silverlight 8.1 apps

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[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

This topic describes the features that are available in Windows Phone Silverlight 8.1 apps.

Windows Phone 8 APIs

Most features and APIs available in Windows Phone 8 apps continue to be available for Silverlight 8.1 apps. Some of these APIs will behave differently when called from a Silverlight 8.1 app. For a list of all affected APIs, see Platform compatibility and breaking changes for Windows Phone Silverlight 8.1 apps.

Features that are supported only in Silverlight 8.1 apps

There are a few features you can use only in apps that target Silverlight 8.1. These include:

Your app can register as a photos provider for contacts in the People Hub. For information about implementing this feature, see Implementing contact bindings in a Windows Phone Silverlight 8.1 app.

Online media extensibility for the Photos Hub

Your app can register as a photos provider that’s displayed in the Photos Hub. For information about implementing this feature, see Implementing online media extensibility in a Windows Phone Silverlight 8.1 app.

Seamless VoIP call upgrade

Silverlight 8.1 VoIP apps can seamlessly upgrade calls from cellular to VoIP when it is supported by both the caller and the callee. For information about implementing this feature, see Upgrade calls from cellular to VoIP in a Windows Phone Silverlight 8.1 app.

Windows Phone 8.1 features supported for Silverlight 8.1 apps

Most of the features that are supported for Windows Phone Store apps also can be used in Silverlight 8.1 apps. The following table lists supported features.