I've been having an issue for the past few months where call audio was going in and out, or I could hear them, but they couldn't hear me. I assumed it was due to 2G network being shut down. It's been enough of an issue that I started carrying a back up phone in case I really needed to make a call. However, today I was making a call on speakerphone, so I got to look at the screen and saw that the indicator for the speakerphone was cycling between speaker, handset, and headset, roughly corresponding with the audio cutting in and out. Anyone seen this before?