1. The worldwide emergency number for Mobile is 112. If the keyboard is locked or you are out of coverage, it will work.
2. If you are locked out of your car and have a remote entry, call whoever has the second key and have them press the unlock button while holding the cell near it.
3. Low cell battery? Press *3370# and your cell will restart with the reserve which will refill next time your charge your phone.
4. Want to disable a stolen mobile phone. Get your serial number by pressing in the digits *#06# and copy down the 15-digit code. You can phone this number in if your cell is stolen and render your phone useless. You might not get your phone back but if everyone did this, people would stop stealing cell phones
Info obtained from The Beacon, National Grid.