Social Media Advice Not Correct On 112
"1-1-2 is the European emergency number," NENA said. "While dialing 1-1-2 in the United States may work on certain devices and on certain wireless networks, the only way to ensure that your call for emergency assistance gets through is to dial 9-1-1.
"When a caller tries to use 1-1-2 in the United States, the call may not go through. Even if it does, 1-1-2 provides no special emergency call handling - in fact, it adds a delay due to it having to be converted to '9-1-1' and then routed to the appropriate 9-1-1 call center."