My father in law visits NZ every year. He wants to have a phone for the odd text and in case he needs to make a call, but it's very low use - not a smart phone.
They have a Vodafone NZ SIM but effectively you need to pay $20 a month for prepay.
Is there a carrier that's better for this situation? Say, top up and the credit lasts a year or so until you use it?