ok i have a blackberry storm 9550 for less than a year now for the last couple of months it keep dropping off and on to the net although my phone is connect straight and the net is always active then my whatsapp vanish off my screen so i did a system wipe and restore it now my whatsapp my blackberry app world icon as vanish and it will not go online i keep get an (http error 504) or that i don't have a data service and i need the contact my service provider which i did and it don't cange...... help!!
