I have a Samsung Galaxy S Plus. It suddenly stopped working with applications I downloaded from Google Play. I formated my mobile and downloaded them again, but the problem persists. They download without problem but I can’t use them. I mostly try to use messengers like WhatsApp, Kik Messenger and MeetMe. None of them can send messages like they should. I tried an antivirus but when I tried to update it, it says I have no connection.