Yes, lost my Palm Pre once I think my youngest son threw it out of the wagon while taking him for a stroll. I tried calling me and my DH no answer then it just went into voicemail. However, my gut feelings told me to try and call my phone 4 days later the person that found it went and got a charger and was using my phone it started ringing again.
I contacted the police regarding my phone made a report and disconnected the services.
The carrier did not charge me for the calls. My DH had advised me to put a lock code on my phone which is placed on my new phone. I was so upset because all my kids pics was on the phone thats what really had me boiling!
Sorry you lost your phone my advice disconnect the service.
BTW if the person tries to have it reactivated I do believe a code will alert stolen phone.
Oh yeah then the scariest part was the individual started calling my contacts and giving his bill collectors my telephone numbers the police did track him down!