iPhone 13 Pro Max calls "sometime" go direct to voicemail
Not all of my calls are coming through on my Iphone13 ProMax. Sometimes they go to voicemail, other times there is no option for the caller they are just cut off, and other times it works just fine. As it will not replicate at the Apple Store or the T-mobile store I'm told there is nothing they can do. Any suggestions? Thank you.
[Re-Titled by Moderator]
iPhone 13 Pro Max, iOS 16