I'm trying to do an app or background or even a lock screen that displays my sip registration status att the time. Android has sip built right into the phone app and is easily configured by opening phone then pressing menu and changing calling accounts. There you will find all the settings needed to configure making sip calls as well as receiving them. Android has this link in their developer documentation: https://developer.android.com/reference/android/net/sip/SipSession
But I have not been able to find anything that has this feature or anything that I could use to input that reference to try and get a working status. Any ideas anybody?