Why isn't my Lumia 720 screen going off while charging?

[Windows Central Question]

hi guys i've got lumia 720.

i have seen a problem while charging. the problem is glance screen is not going off by 30 sec while charging. plz help me..

 

[thephiri2point1]

Re: hi guys i've got lumia 720.

Check your setting. You might have it on always on when charging