"Heating aid stops when I put in second AirPod: Hearing aid was working great. I was turning on different options and all of a sudden it only works with one AirPod in. As soon I put in the second one it stops. I have tried turning off hearing aid and then turning it back on again. Nothing."
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Overviewed this Link?: Use the Hearing Aid Feature on your AirPods Pro 2 - Apple Support
Please Provide More on your iPhone:
What's your iPhone model? What are you looking to update to? Without that being provided, read the following...
Update your iPhone:
What to Update: Installed apps and the iOS.
How to do so...
A. Verify Compatibility:
Identify your iPhone model. The first thing that comes to mind in incompatibility being the culprit. So, confirm the model of your iPhone. If iPhone model is incompatible with iOS18.3.1, then it is because you iPhone does not meet the hardware requirements for this iOS version(s).
B. If Compatible...
1. Back Up First:
IMPORTANT: If you have an option to update, however, then be certain you backup your iPhone first. That way, you will have something to restore your iPhone from should anything go wrong with the update
then...
2. Proceed with the Update:
Go Here: Update your iPhone Using a Computer - User Tip