I purchased a 30 days international roaming service data plan for New Zealand trip via Celcom. Their partners are Vodafone & 2 Degrees in NZ. Once family arrived in Auckland, they couldn't find Vodafone network while 2 Degrees are forbidden to use. So despite numerous attempt to access on the data network, they failed to connect with the local network service provider. And after almost 8 days out of data network usage they only managed to find out Vodafone is not in operation anymore but changed to a new network provider name One NZ. So all the while during the trip, none of the services had been utilised because simply Celcom failed to inform customer of such change with their partner in New Zealand. And during complaints lodged to the Celcom customer service, a guy name Chin, didn't even notify us this changes & assist us to reconnect the network. So ultimately we paid almost RM 100 for nothing & we did ask for refund but they Celcom didn't promise to do anything for their mistake. We will never recommend anyone to use Celcom for roaming service & data network service in overseas. Try other service providers better.