TS3424: iPhone: Troubleshooting activation issuesLearn about iPhone: Troubleshooting activation issues
Currently Being ModeratedDec 7, 2012 11:18 AM (in response to Patriotstbrm)
If you want to use Virgin Mobile in the US, you'll need to buy a new phone designed for their network. They are a CDMA carrier. You can't use an iPhone 3Gs at all on their network as it's strictly a GSM phone.
Currently Being ModeratedDec 7, 2012 11:43 AM (in response to Patriotstbrm)
As KiltedTim mentions, Virgin is just a subsidiary of Sprint, which is a CDMA carrier. Other than AT&T (who does not allow iPhone's with pre-paid plans) you might look to see if TracFone or T-Mobile suite your needs better - they are both GSM carriers (well TracFone is a mobile virtual network provider, but they do lease network access from T-Mobile and AT&T in certain parts of the country, so you would need to check what they offer in your area).
Of course, no other GSM carrier in the USA other than AT&T can offer you full support for all iPhone features and functions.