Same here... my blackberry was fine until Saturday morning I realized as soon as I came off wifi I could not receive emails or bb ims or nothing... funny thing is I emailed myself from my blackberry checked my hotmail and its there and my bbm contacts receive my ims but Im jus not able to receive theirs back... I have also contacted my service provider they made me do a master reset which I've done a million times before contacting them. They also said that I should register again which i did and they said they sent me service books or something like that which I did not receive. I called back and told them and I was told to bring the phone in on Monday to have a tech look at the phone because according to them everything looked fine on their end. But as soon as I connect to wifi it sends all the emails and bbm ims so I have no clue I hope I can find out soon.