ChatGPT iPhone app voice cuts out or plays no audio

is anything bluetooth connected? voice mode loves to hand the audio to earbuds or the car when you're not expecting it. check the output in control center while it's talking. other things that have helped people: - update the app, then force close and reopen it - check the microphone is allowed for ChatGPT in Settings, it can drop out if it can't hear you - turn off Low Power Mode - voice mode streams, so on weak mobile data it stutters and goes quiet, try it on good wifi to compare if it's still silent, delete and reinstall the app. your chats are tied to your account so you don't lose them.