So I'm quite tired of iOS development cycles. Every now and then they decide to change the behaviour of wifi connections. All throughout iOS 7 wifi would disconnect itself after a little while whenever the phone was locked. Only data connection was cellular. That was ok for everyone except people like me with no cellular signal at all at work. I rely on wifi for connectivity while at work. So with iOS 7 this would always happen. I had to leave a radio player running in the background all the time to avoid the iPhone to drop the wifi connection. With iOS 8 this was "fixed" and iOS kept wifi connections alive. I could get emails, messages, and calls no problem. And iOS 8.3 "broke" it again. Why this inconsistency? Why not add a damn toggle to "keep wifi connection alive" for goodness sake.