Help! I don't know what to do. I recently got a replacement iPhone (under warranty), and the screen has been acting really weird - moving by itself, things moving on its own (for example, in the SMS Messages list, the "Delete" button would constantly appear and then disappear, like I was swiping it). I have tried a restart but it still is acting weird, and I think it made an international call all by itself. I'm really unsure what to do, and I'm not sure if I did anything wrong, because this is really weird and I have never seen this before. Thanks!