how do i unlock my iphone?

[David Rosas]

its a 3g iphone on version 4.2.1.
it says the message INSERT SIM CARD but now im stuck.
help?i rather prefer an easy way with no downloads

 

[Unregistered]

I suggest you can approach Mobile-unlocker.com and specify the country,locked network of iPhone 3G.Based on the availability you can get the permanent remote unlock service along with free instructions.This is much more easy than other unlock methods.