Eine Freundin aus der Hightech Branche gab mir folgenden Rat:
Anyone else who has a cell phone should know this trick:
Key in the following digits on your phone: * # 0 6 #
A 15 digit code will appear on the screen. This number is unique to your handset so keep it in a safe place. If your phone gets stolen, call your service provider & give them this code. They can then block your handset so EVEN IF THE THIEF CHANGES THE SIM CARD, YOUR PHONE WILL BE TOTALLY USELESS! You won't get your phone back, but at least you know that whoever stole it can't use OR sell it either.