I have had my iPhone 7 since it got released. In the last 1-2 weeks, I started having a lot of problems with calls. I either get "call failed" errors or the audio gets lost (I can't hear the other person / they can't hear me.) The problem appears to be growing.
If the iOS is up to date and you're still having issues, sign into your myAT&T account and use the AT&T Troubleshoot & Resolve Tool to check your iPhone. Follow the steps provided to find the cause and resolve the issue. let us know if this helps.
James, AT&T Community Specialist
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