Contact the Wireless Service Provider

• When your iPhone is lost or stolen, contact your wireless service provider immediately.
  This will allow your provider to shut off access to your iPhone calling features. However, if the phone is not passcode protected (or locked), information on the phone still can be at risk.
  
  

File Police Report

• File a report with the police. Bring your identification and proof that you own the iPhone, including the serial number. This will help police identify your phone and contact you if it is recovered.
  
  Police also check pawn shops. If someone has sold your iPhone, you may be able to receive it from the pawn shop free of charge. Without the police report, you may have to pay to get your phone returned.
  
  

Track Stolen iPhone

• Programs like iHound allow for online cell phone tracking using GPS and Wifi signals. iPhone users also may check their phones online to see if any images or videos were taken. Once this information has been collected, turn it over to the police.
  
  

Prevention

• You can try to limit the damage to a lost or stolen phone by activating passwords and locks. You can further limit access to your data by turning off the option that allows previews of text messages.
  
  Set the iPhone to self erase. Turned on, this feature gives a user 10 tries to input a correct password before the phone will erase all stored information. Before activating this setting, make sure to have a backup copy of your files.