iPhone 13 Pro Max cell call on speaker is garbled
Girlfriend has 13 Pro Max that was purchased new from Apple Store in ATL in March 2022. When she tries to have a conversation using the hands-free speaker, her words are clipped, sometimes three or four words are dropped, sound is distorted and I often can't understand what she is saying. Others have had same problem when calling her on her iPhone.
Wifi calling is turned off as is 5G service.
She has AT&T and their 5G service in this area is spotty. Also, I'm inclined to think that they don't have as many 4G towers as they have in the past. Could it be a cell tower coverage issue?
iPhone 13 Pro Max