My Lumia 520 is set to disconnect wifi on screen lock. I've noticed earlier it keeps connected when plugged into the power, now it does even unplugged. I'm not sure if it is a software issue, a buggy app messing or even hardware issue?
I'm glad to see such a fast answer! The phone is set in advanced settings to disconnect while screen is locked, thats why i worry about that.
I somehow fixed it, re-inserted battery, uninstalled WeChat app. I didn't know about soft reset, thanks!
Since his phone has replaceable battery. re-insert the battery is the same as soft-reset. Soft-reset procedure is useful only for phones that can't take battery out.
