A5 2017 won't react to a case lit

[pocho]

Hi I got a case with the lit on it and to have it locking and unlocking my phone when I close it and I opened i need to use a 3 th party app full of commercial. How can this be possible? Am I missing something in the configuration of the phone although I looked everywhere?

Thanks to whoever has an answer to this

[John4Oh]

And do you still need the 3rd party app now that the phone is out of the case?

[pocho]

Well I still need it if I want the screen to light up when I open the lit of the case. Without this app the screen would  remain black when I open the lit until I press a button.  I just think that the phone should be able to so this without an app. In a Samsung tablet it works without an app