This started about 2 weeks ago, when I get calls they either can't hear me and we gotta call back, or during a call my screen lights up and either my face causes it to hang up or phone does, or it try's to dial another phone number for me, it tried an international number, I can not afford this for sure, but I have cleaned senors and screen per protocol and tried updates. At the same time my camera started only focusing every now and then, it doesn't alert me for some of my calls and texts randomly, and starts to make a call on its own while it is sitting on a table with no one touching it, is it me and my phone or is others having these issues and can I fix them?