If you receive an upsetting call, hang up, then immediately pick up the receiver. After you hear the dial tone, press *57 (Call Trace). A recorded voice message will confirm that the call has been traced.Hang up and note the time and date of the call and contact your local police department if you want to take legal action against the caller. The traced information will be released only to law enforcement officials.
*Please note that *57 (Call Trace) will only trace the last number that calls your line, so be sure to use Call Trace immediately after you receive the harassing call.