Every time i put my phone to sleep i lose my wifi connection then all the notifications wont push nothin imessages,facetime calls skype,viber watsapp its rlly putting a dent in my life i cnt do anything in sleep mode i tried everything router options upgraded my router and reseted it and also i did a reset to the phone from back up and also as a new 1 and went to network reset network settings nthn plz help