To edit a phone number, you will do this from the About Me section within TurboTax.
From the Tax Home screen, locate the first section "About me"> Then personal info (click on the pen icon to edit)
Under "Your Info", select edit under Address and Phone.
If you successfully located the section to edit the phone number, but are still having some issues, such as experiencing a loop, hitting a snag or trying to save it but reverts back to the old number, try these further options:
If you are using TurboTax Online
Check your browser's settings. (Clear your Cache and Cookies)
Check on your internet connection
Try using a different web browser
If you are using TurboTax Desktop
Make sure the software is updated.
If you haven't rebooted your computer, please do
Check your firewall and antivirus settings. Make sure they aren't blocking any feature of the software.
If you are still having issues after trying these options, contact Customer Support by clicking the link below