Why has my button to lock the screen stopped working?

[Windows Central Question]

my button to lock the screen has stopped working

my button to start the phone has stopped working. i press it but it doesn't lock the screen and i have to open the phone and press it hard for the phone to start

 

[Microsoftjunkie]

Re: my button to lock the screen has stopped working

Download a power button lock app.

 

[Niranjan007]

Re: my button to lock the screen has stopped working

Enable double tap for unlocking and download touch lock app for locking..