The Apple iPhone 4S launched in October 2011 with its voice recognition innovation feature Siri. Siri allows users to operate the device with voice commands to create text messages, emails, notes, reminders, searches and make calls.
The equivalent UK emergency number of 911 is 999.
You'll be asked if you require police, fire or ambulance.
Dial 101 for non-emergencies. http://www.police.uk/101