A second hand iphone would do just fine and would be cheap. 'Iphone' does not magically translate into $700 piece of hardware, it could easily be $50 or $100 when bought second hand or even free when a gift from a family member or even a stranger. Heck I know of some iPhones that have gone through 4 pairs of hands by now. Just because the first owner moves on to a newer and shinier model whenever they come out (talk about bad decisions...).
