Hi, I just got a new iPhone 13 Pro Max and it's been a nightmare with the audio cutting out from Day 1. Every. Single. Call. Doesn't matter where I am or with whom I might be speaking. I've had the phone for just under a month. For long stretches during conversations, my phone's audio will cut out so that callers can't hear me at all. At first I thought it was the other callers, and then I thought it was the speakerphone on my phone (as some other people have thought on this forum). I use my speakerphone A LOT in my business. I tried removing the case, which had no effect, and resetting my Network settings, which required entering in all my passwords again. I then tried using only my car's bluetooth, and then I tried using only my iPhone earbuds. Nothing changed. I set up a Genius bar appointment for today, but then I read on this forum that many people had their phones swapped out, only to have the same problem. Since noise cancelling cannot be turned off anymore, that was not an option for me.
This morning I had the idea to eliminate the 5G option on my phone. I went into Settings, Cellular, and Cellular Data Options, and Set Voice & Data to LTE. Then, I set my phone to Data Mode "Standard." I had already turned off Data Roaming earlier this month to see if that did anything.
For the last 3 calls, the problem hasn't reappeared. I currently have Data Roaming toggled off, Voice & Data set to LTE, and Data Mode set to Standard. I hope this helps someone!!!!