The DOJ said the scheme allowed buyers to stop using AT&T as a provider. The Department of Justice has unsealed charges against a man who allegedly paid AT&T "insiders" more than a million dollars ...

Among the providers, AT&T is known to have the most procedures to have your iPhone unlocked for use with other providers. Pictured: An AT&T store is seen on 5th Avenue in New York on October 23, 2016.