Phone gets locked every 1 min automatically closing applications
My Iphone 6S Plus keeps getting locked automatically every 30 seconds even when I am using my iphone for messaging or browsing. Have kept it for charging and it keeps getting locked every 30 seconds and asks for Touchid or Passcode. This is also delaying the battery charging.
This issue is from the past couple of hours. Please help..!
iPhone 6s Plus, iOS 11.1.2