I have a samsung a7. I just recently have it serviced to change the charger's port. So after i got it back, it was good exept for one thing, it keeps on vibrating whenever i receive a notification (fb, messenger, skype, viber, whatsapp, emails). The vibration is off on the settings, smart alert and notification reminder are also off. The vibration for each app (under notification on each apps' settings) are also off. Can any body help me?