Ok, thanks so much. If something were to go wrong with this and I can't keep the unlimited data or something like that, how would I go about canceling the service/how much will it cost to do so?
I guarantee that you will be able to keep unlimited data when upgrading to the new phone.
If on the small chance that you can't, you have 30 days to cancel the account but you would still have to pay for this months service that you used which would be +/- $73.