We all know that all phones are required to dial 911, even with no plan. If it has battery power and can see a cell site, it WILL call 911. Federal law.
Did you know that a key-locked phone will also call 911 if you hold down the 9 key? Yes. It will. No, don't try it- Mimi's already done that for you.
The sheriff's office didn't think it was very funny when they called back!