Samsung on 5 wont lock

[AC Question]

I put my lock mode on all the options but it keeps going back to swipe to unlock and if i press the little locklhen lock it for about. Min. Then it goes back.

 

[B. Diddy]

Welcome to Android Central! Look for an option in your system settings along the lines of "Lock Automatically." It's probably in the Settings>Security or Settings>Display menu. Make sure the interval there isn't too long. If it's set to 30 minutes, for example, that means you have to wait 30 minutes after the screen has gone to sleep before the phone locks again.