Take a look at the OData client libraries for .NET 4, Silverlight 4 and Windows Phone 7.
Source: CodePlex
ODataNetFx4_SL4_WinPhone7_Client.zip - contains a Visual Studio 2010 solution with the source code for the OData .NET 4, Silverlight 4 and Windows Phone 7 Client library. To use, unzip the file locally and open the solution in Visual Studio 2010.
ODataClient_BinariesAndCodeGenToolForWinPhone.zip - contains just the OData client assemblies and code generation tools for use on Windows Phone 7.
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