Why does my iPhone 5 do this? - 1

Well sometimes when I try to turn my iPhone 5 back on off of sleep mode, it won't turn on. I have to keep trying for a minute until it turns on. How can I fix this?

I have gotten a iPhone 5 as well and this happens to me too. As an apple developer I believe it is a software bug but can't seem to locate it, I would just wait until fall as IOS 7 is coming out and it will probably be fixed.