Can i use my Nokia 2760 in Indonesia with an Indonesian SIM? It is unlocked, but will it work? I have a Nokia 2760, and have tried it on two sims from different networks and it works fine, so i want to take it to Indonesia for my 3 week holiday, leaving my iPhone safely at home. I want to buy an Indonesian SIM card while i'm out there. This phone is GSM 900 / 1800, so does that mean it will work on all Indonesian networks?