Δεν το εχω δοκιμασει, αλλα το πηρα απο αξιοπιστη πηγη
MOBILE USERS - NUMBER CAN BE DIALED WITHOUT SIM CARD DURING EMERGENCY.
The Emergency Number worldwide for GSM Mobile is 112 and not 999.You can dial 112 even without a Sim Card.
If you find yourself out of coverage area of your mobile network and there is an emergency, dial 112 and the mobile will search any existing network to establish the emergency number for you.
This number (112) can be dialed even while the keypad is locked.