I am pretty clueless about sim cards, so I have a few questions. My actual phone is a Sprint iPhone 6, so I know they require nano sim cards. Where do people buy their nano sim cards? How much should I expect to pay for a lot of 25 or 50 nano sim cards? Would it be cheaper to buy a shitty phone and 25 or 50 normal sim cards? Do I need to buy them preloaded with phone plans or anything? Thanks in advance for any tips!!