If you use your phone an average of 5 hours a day for two years and then throw it in a junk drawer the hardware would cost less than 50cents per hour of use. I use my $800 iPhone about 30 minutes a day, keep it for 4 years, and spend about $1 per hour of use.
I'd say the market is heavy cellphone users that use apps that benefit from the larger screen.
I'd say the market is heavy cellphone users that use apps that benefit from the larger screen.