Unlock your Windows Phone device

The process of unlocking your WP7 device for development is very easy.

1. connect your device via USB cable
2. launch the tool “Developer Phone Registration” from All programs > Windows Phone SDK 7.x (see the Figure 1)
3. enter your Windows Live ID and password (if your phone screen is locked, you’ll have to unlock the screen and retry it.)

Note: unlocking your WP7 device using the tool allows you to debug and test applications on your device.

Figure 1

For more details see http://msdn.microsoft.com/en-us/library/ff769508%28v=vs.92%29.aspx