Some iPhone 7 users are hidden by nasty glitch using the Lightning EarPods that come with the iPhone 7. During playing music the volume control stalls, so the user can’t answer phone calls or activate Siri.
Business Insider Germany covers the story here. The issue happns after the EarPods plugged into the iPhone’s Lightning port. After a few minutes playing audio the volume control stops working. So a user can’t adjust the volume, activate Siri or answer phone calls.
Here is another Tweet addressing this issue.
PSA: Lightning headphone adapter shuts off after 5 minutes of inactivity if screen is off. Pause/volume don’t work until replugging. @atpfm
— Scott O’Reilly (@scttor) September 18, 2016
An Apple spokesmen confirmed this issue and says Apple is working to fix it in a future iOS update.