In Reply to: Tech Blonde posted by balibubba on Monday, 13. February 2012 at 06:59 Bali Time:
But to begin with you will need be sure your phone is not locked to your home phone carrier. If you got your phone as part of a plan, either pre-paid or post-paid then it's probably locked.
You can take it with you and hope they can unlock it for around $20-ish (but they can't do all phones, particularly the less common ones). Or you can buy a cheap unlocked phone from somewhere like Harvey Norman for around $20-ish.
If you bought your phone outright, it's most likely not unlocked and you can ignore the above info. :)
If you're not sure, get someone you know who uses a different phone carrier and put their SIM in your phone. If it works, your phone is unlocked.
Then all you need to do is go somewhere that sells SIM cards - which is generally not hard to find - they're all over. They'll set it all up for you, and if they don't automatically show you how to go about calling home cheaply, ask them and they will.