Data went up when we bought new phone
The set up is what is using the data. You have 10 days where all data used will not count towards your monthly allotment as long as your a new customer or adding a line to your account. This does not apply if you simply purchased a new phone and set it up on data. It would have prompted you saying this set up will cause charges or however it says it. It also gives the option of using wifi to do initial set up.