When my phone gets bogged, clogged and slows down, I'm in the habit of doing a full factory reset, emptying everything and starting over. But evidently (unbeknownsed to me) a new security measure requiring the ORIGINAL EMAIL AND PSWRD is in place. I've tried all mine and my husbands (just in case) none work. Called Samsung (under warranty till Nov) but I need the receipt. Who keeps receipt past the "returnable T/F)"? And the store manager is no help. It's still brand new (ish- 3 mo used) but all I get is "please enter the email /pswrd 1st associated with..... PLEEEEEAASE HEEEEELP??! Been frustrated on this for 7 months and times running out in Nov. (Warranty)