We don't even know if there will be a iPhone in 5-7 years! 
I know I'm speaking blasphemy. Things can change allot in 5-7 years. We might not even use or need cell phones who knows Example here are some of the best cell phones of 2005 http://www.cnet.com.au/top-mobile-devices-of-2005-240060221.htm
I know I'm speaking blasphemy. Things can change allot in 5-7 years. We might not even use or need cell phones who knows Example here are some of the best cell phones of 2005 http://www.cnet.com.au/top-mobile-devices-of-2005-240060221.htm