05-18-2011, 03:33 PM
I don't have direct experience with South America, but I think the multi-country SIMs like the one Telestial offers work in South America. (Telestial should have a list with rates.) I have not checked on cards like this since last year, so it might be worth doing some research to see if there are more competitive alternatives.
Having a SIM card you can use in more than one country is mainly a convenience. In most cases getting a local SIM is the least expensive. The Telestial offering might end up being cheaper if you are visiting several countries and would end up with unused minutes on several local SIM cards if you went that route. You also get a number you can give out ahead of time. Note that several places sell foreign country SIMs in the US, but usually with a big markup.
And yes, you'd have to jailbreak, then unlock, your iPhone 3G to use a non-AT&T SIM.
Good luck.
- Winston
Having a SIM card you can use in more than one country is mainly a convenience. In most cases getting a local SIM is the least expensive. The Telestial offering might end up being cheaper if you are visiting several countries and would end up with unused minutes on several local SIM cards if you went that route. You also get a number you can give out ahead of time. Note that several places sell foreign country SIMs in the US, but usually with a big markup.
And yes, you'd have to jailbreak, then unlock, your iPhone 3G to use a non-AT&T SIM.
Good luck.
- Winston