A:
Depends on carrier and data plan and how much data you plan to use. Most carriers have standard rate for a certain amount of data. Usually minutes and messaging are unlimited. Data is what gets you on an iPhone. For example I have 4 iPhones (2 6s, 1 5C, 1-5) my monthly plan with 10gb of data and I use a lot of data, unlimited messaging and calling is $146 a month after taxes with AT&T. If that's helpful is anyway.