In Reply to: roaming phone can do voice no sms? posted by Ray and Merryl Perth on Tuesday, 17. November 2009 at 08:20 Bali Time:
SMS messages can be delayed or not get from one carier to another.
As Ron says, just put an Indo SIM card in your phone and let your friends know the number. Mesages and calls can then be done cheaply and eficiently.