I wouldn't say they don't have a clear vision. Given their size / market-share, one of their goals is probably just not to screw up in any major way, which they

I wouldn't say they don't have a clear vision. Given their size / market-share, one of their goals is probably just not to screw up in any major way, which they've succeeded at. I don't plan on getting anything other than an iPhone in the near future, so they must be doing something right. At the end of the day it's probably just difficult to create new phone related innovations every couple of years.