Hey guys i got my iphone 3gs today at Australia.
Just wanna ask here, took me 1 hour to figure out how to sync my contacts from my sim card to my iphone, which was not easy.
So my question here, now that my contacts is in the iphone from the sim card, if i put in another sim card will it auto sync from itunes to another sim card, after i activated/authorized that particular sim card with the iphone via itunes.
And finally will a non 3G sim card work with an iphone 3GS in Malaysia, i have a Digi prepaid sim for 6 years already.

Thanks for the help. Appreciate it.

Ok sorry i will start again:

I'm using sim card A (My Australia sim card), all my contacts are in sim card A, i managed to sync from Sim A to my iphone 3gs manually via iphone navigation, settings>mails,contacts,calendars>import sim contacts. So after doing that my contacts can be accessed in the iphone.

Now my questions are:
I'll be back in Malaysia during the holidays and it is an unlocked iphone i requested my providers to unlocked it.
Questions:
1. Every time i put a different SIM card e.g SIM B(Malaysia sim card), i have to connect to itunes first right so that itunes can 'activate' the iphone with the new sim (sim B) in order to be used.
2. Now how do i sync my contact from SIM A to the iphone which is now using SIM B? Does iphone autosave my contacts from SIM A when i connect to itunes and automatically/manually will sync my contact to the new sim B after 'activation'?
3. And lastly, sim B is a non 3G sim card (Prepaid), can iphone still be used with a non-3G sim card in Malaysia, i don't really surf internet via 3G since my streamyx is up to my expectation for wifi navigation with the iphone.

Thanks for the help.