This is the program you are referring to: <a href="https:&#x2F;&#x2F;www.apple.com&#x2F;ipad&#x2F;apple-sim&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.apple.com&#x2F;ipad&#x2F;apple-sim&#x2F;</a><p>AT&amp;T will lock your physical SIM if you ever use their service, but with anyone else you can jump from provider to provider on the same device at will.