Australians could enjoy much cheaper calls when travelling overseas thanks to global roaming provisions in the Trans Pacific Partnership agreement.

Trade ministers from 12 Pacific Rim nations sealed a major regional trade and investment accord on Monday night spanning 40 per cent of the global economy, prising open new markets for Australian services providers, manufacturers and farmers.

One of the provisions could also slash the often exorbitant fees that mobile providers charge for Australians using their phones abroad. Credit:Brendan Esposito

But one of the provisions could also slash the often exorbitant fees that mobile providers charge for Australians using their phones abroad.

While telcos like Telstra often cop the blame when bill shock hits after a trip overseas, they are often merely passing on the costs imposed on them by foreign mobile providers.