This happened recently, my iPhone 4's home button won't respond sometimes no matter how many times I press it, nothing happens. Sometimes it works fine, other times not. I bought my Verizon iPhone 4 back when it was released Feb 2011. Sometimes I feel that the home button is a little bit loose, but I know if I take it to Apple, I need to show them the problem and since this seems to be at completely random times, I'm not sure what to do. Any advice?