With Windows Phone 7 Mango, it’s now possible to use a custom ringtone. However, you have to know how to do this because simply transfering any mp3 to your phone is not going to work. There are some constraints…. Your ringtone has to be: a .WMA or .MP3 max 1Mb in size about 30 sec. long… Continue reading Use a Custom ringtone on WP7 Mango