In Reply to: same here our Nokias always work posted by roxybon on Tuesday, 26. May 2009 at 11:04 Bali Time:
Indonesia and Australia use the GSM standard.
Japan seems to use something else. I tried to put a Mentari Sim card into the handset belongong to a Japanese tourist in Padang Bai this year and it would not work.
Your Nokia will be able to roam in Bali if you are on a post paid plan and ring your phone company before you leave Auustralia.
You can use a Balinese SIM card like Mentari if your Nokia is unlocked.