I legally changed my name and reached out to Wireless and Fios to update accounts, but received conflicting information and was not asked to provide documentation for name change. Here's what happened:
Wireless online live chat rep: put in Requested to Transfer a Line, which required a soft credit check. I read details of this and did not believe it as the appropriate process.
Then I called and spoke w/ Wireless call center rep. After detailing earlier experience, he explained an edit feature they access and proceeded to make the name change. He confirmed no legal documentation was necessary for change.
Fios call center rep1: they put in order for CHANGE OF ACCOUNT OWNERSHIP (CAO) and asked my SSN. I explained my earlier experience and ask her to double-check with superior or coworker.
(transferred) to Fios rep2: they advised CAO is correct step. However, if I wanted billing to reflect name change and not the account itself, he could do so. I did not want to proceed with CAO, and requested billing name change. He advised an email notification would be sent confirming billing name change shortly after call.
The last email received was an update to CAO order. No emails received confirming name change either from Wireless or Fios.