Quick question regarding testing on Windows Phone.

Questions & Answers
1

Hi,

I will have access to a Windows Phone device and was wondering if similar to Apple, I have to have developer license or something to let me run our builds on it.

Thanks.

2

You’ll need a Windows Phone developer account and a copy of Windows 8, but other than that you don’t need any licenses.

See: Getting started building Windows Phone Games with Unity - MSDN Blogs