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? What is the Smart Call feature? What languages are currently supported? Can I make calls from any phone with my TEL3 account? Comments 0 comments Article is closed for comments.