basics
emergency calls
Tap 
on the global navigation bar to open the phone keypad, then enter the emergency number using the numeric keypad. Tap Call to make the call.
Your service provider programs one or more emergency phone numbers, such as 999, that you can call under any circumstances, even when your phone is locked or the SIM card is not inserted.
Note: Check with your service provider, as emergency numbers vary by country. Your phone may not work in all locations, and sometimes an emergency call cannot be placed due to network, environmental, or interference issues. Do not solely rely on your phone for essential communications, such as medical emergencies.
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