No, but there will be an option to transfer money from your account to someone else so they can then buy their own data allowance.

Perhaps. It depends on what make and model of phone you have, Telecom Niue network currently does not support Apple devices. If your phone supports, the spectrum bands that we use on our 4G (Band 28) then you do not need to change. If not, then you will need a new phone. Any iPhones with VoLTE will work on our network. Just ensure your phone is not network locked.

Will the phone come with a Data plan?
No