They will then block your handset, so even if the thief changes the SIM card your phone will be totally useless. You may not get your phone back but at least the thief cannot use or sell it. Put your post code and house number on the inside of the battery case with a UV pen. You can get a UV marker pen from your Community Police Officer. Read the 'Coded for Keeps' leaflet about identifying your phone and other property.
Mobiles are a prime target for thieves.
A little bit of common sense about where you keep your mobile can save you from becoming a victim of crime. Be street safe . In some cases thieves break into garden sheds and use the tools they find to gain entry to the house. A good quality hasp and staple with a strong padlock is important on all sheds and side doors to garages. Glue smeared over the heads of screws in the hinges of shed doors might stop a thief from unscrewing them.