I got it now. No improvement with wifi sleep mode . PLEASE FIX WIFI SLEEP MODE ISSUES WHEN SCREEN GOES OFF. I NEED WIFI CONNECTION WITH OFF SCREEN TO GET NOTIFICATIONS, SO PLEASE STEP IN.
Not much use in shouting, UMI ain't listening. They've about to release a new phone and their engineers are hard at work. Once UMI have released a phone that's it, buyers are on their own, don't expect any help from UMI - none- nada -ziltch!