My iPhone 18 Pro's Action Button is not working on the first press when the screen is off/locked
iPhone 18 Pro Action Button – first press doesn’t work when screen is off
I’m experiencing a strange Action Button issue on my iPhone 18 Pro running the latest iOS 27.0.1.
● Action Button is set only to Silent Mode
● When the screen is ON, it works normally every time (tested 20/20)
● When the screen is OFF/locked, the first press does not activate Silent Mode
● Pressing it again immediately usually works
● If I wait a few seconds and press again, the first press can fail again
I already visited an Apple Authorized Service Provider. They ran diagnostics and said everything was normal, but the issue happened again after I returned home. They suggested it could be related to the new iOS.
Has anyone else with an iPhone 18 Pro experienced the same behavior?
I’m trying to determine whether this is a software/iOS issue or a hardware issue with the Action Button.
[Re-Titled by Moderator]
Original Title: Action button issue