I am sorry to hear you are having problems setting up this essential feature. It will be my pleasure to help!
When you try this process, do you do it from the Phone app? If not, please make sure your cellular data is enabled and follow these steps:
From the Home screen, navigate to the Phone app > Voicemail
Tap Set up Now
Enter a password, then tap Done
Tap Custom to record a greeting or use the Default option
Finally, tap Save
If you continue receiving an error message, I recommend trying our AT&T Troubleshoot & Resolve tool for additional steps. Make sure to select the make and model of your phone > Voicemail to view complete instructions.
In the event the problem is not resolved, another reason you might have issues could be if your line doesn’t have this feature included. To make sure this is not the problem, I will send you a private message to collect account information. Please check your inbox!
Thank you for reaching out and have a wonderful weekend!
Anabel, AT&T Community Specialist
Need help? Ask a question to get help from the AT&T Community or support from AT&T specialists. If this reply helped you please use Accept solution to mark it as an Accepted Solution.