I'm using Verizon Samsung s3 sch-i535.it was working great,suddenely don't know what had happened,its working bit laggy freezy sort of,while browsing it's get freeze for 2,3 seconds,on connecting to wifi notifications of whatsapp,Facebook twitter and other shopping apps are getting late pop ups I mean I used to get these imidietly on connecting wifi when it was working fine, in the notification panel tapping the world clock it doesn't get open at all, it will be open after really big time like 16,18 hours latter it wasnt the case when again it was working fine,also i get again and again i think not more than twice notificatins of "connected to '---'(secure).so can someone help?