I know this sounds like an odd question but here it goes. I currently have a Galaxy S4 that's running on 4.4.2 and a 2010 Nissan Altima. I've never had an issue with my smartphone in the car but last week, I tried to make several calls and after the first time, I wasn't getting any sound on my end or the caller on the other end. I don't even hear a ring tone (the call just connects without sound). I fix it when I restart the phone but it's only a temporary fix. I'm not sure what I should do. Can somebody help me?