Hey guys please help me what i'm gonna do with this problem.. Yesterday i went to mall with a free 1 hr wifi connectivity then i used it till it expires.. Then i got home and i connect to my own wifi and when i'm trying to open my facebook it says i don't have connection.. When i go to internet explorer it says where having a trouble with this sites security certificate and i tried to click the continue to website and it opens normally and i tried to open on app stills cannot open.. I deleted all the histories and all but not only a hard reset. Please help me..