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 do I sync my speed dial numbers with the TEL3Dialer app for iPhone? How can I use Speed Dial numbers to make faster calls? How can I register my phone with my account? What is TEL3Dialer for iPhone? How do you know if the call goes through with your service? Comments 0 comments Article is closed for comments.