I’ve been using my BLACKBERRY PASSPORT like 2 months and suddenly I woke up and the power button is not working properly, If I hold it enough time I can restart the phone but If I just want to to turn it off it doesnt work. And is the same thing with the volume buttons they only work while I am at a phone call o listening to music. I already restore my BBpassport but it didnt work. WHAT CAN I DO?