So I have an iPhone 4 which 3G is not working. My best guess is that APN settings are not correct.
You can't change this from the iPhone Settings, so I tried going to Unlockit - APN Changer for your iPhone.
When I tried to install the profile, I can't because it says that I have a profile already installed (which is strange because I didn't install any profile).
So I don't know what to do. Any recommendations?