A friend forwarded an e-mail circular to me with the 112 info, and also some other interesting things not many people know about mobile phones.
1. hidden battery power When your phone is almost out of power press*3370# (remember the asterisk and #)Your phone will re-start in a special way with this new reserve and the instrument will show a 50% increase in battery life. The reserve will get re-charged when you next charge your phone.
I have put this into my phone contacts, but have never used it.
2. to disable a stolen phone To find your phone's serial number key in *#06#
A 15 digit number will be displayed. This can be kept somewhere safe and used to report theft to your server. They will then block your handset and even if the thief changes the sim card it will not work.
3. if you lock your remote car key in the car if there is someone at home with access to your spare, ask them to press the unlock button next to their phone while you hold yours within a foot of the car door. Your door (or boot) will unlock. This works anywhere in the world.
4. Not a phone tip but useful in an emergency - ATM PIN number reversal if you should ever be forced by a robber to withdraw cash, you can notify the police by putting in your PIN in reverse. You will receive the money, and the Police will be dispatched immediately.