Locked iphone but want iOS 7?
I bought my iPhone 4S in America, but I don't live there. Now I've gone to a phone house and they told me that my iphone is still locked! I got used to it ( I can't have Internet of my phone? Only off the Wi-Fi. It just says: can't activate cellular data… Does anyone know how to fix that too?) but now I really want iOS 7 but I don't know if I can? Will it be possible or will I just F up everything?
Please help, I really want to get it as soon as possible!