I experienced a similar issue after the 14.0.1 update where my phone calls failed, phone crashed, and audio wouldn’t play when I was connected to my AirPods. I reset the network settings and ultimately unpaired every device on my phone. I’m pretty sure my Apple Watch was the issue! I unpaired my Apple watch, then paired my AirPods first and repaired my watch afterwards, it all worked!
Nikkiism
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