It started with me trying to call a contact. I would go to contacts and select a contact but it says "Sorry! the process android.process.acore has stopped unexpectedly. Please Try again." But I've been trying again for a month now. Since, I've met a few people and tried to save their contact info but the same error message comes up. They'll text me and I'll select the info button > more > add to contacts, then the error message displays. How do I fix this?