Around the World
Do most overseas carriers sell unlocked phones?
If you're intending on getting a GSM phone from a buddy from Europe who was on Orange or some other carrier's network T-Mobile, whatever, check the freq and make sure it's compatible w/ US networks, GSM 850, 1900 vs Europe = 900, 1800...
The problem with unlocked phones you bring to the US and use on US carriers , you will have problems with Data services. They are not set correctly to the carriers settings. You might have a fancy phone, but can`t send textmessages, pictures or check email.