How do you change the access number in case of an issue? TEL3 Support Team Updated November 15, 2016 23:14 Follow Open the TEL3Dialer app and go to the settings page Touch the "Type" option Select "Primary" or "Backup Access numbers" Related articles How can I register my Android phone’s number? Does the rate change when making calls with the TEL3Dialer app? Can I place a call with TEL3Dialer when I’m in Canada? How do I add credit to my account? Comments 0 comments Article is closed for comments.