Many cell phone users don't know that their phones are inherently traceable due to advances in GPS and cellular technology.To many this is a welcome safety feature for emergencies, but there is also a growing concern among those who value privacy in everyday life. Your best bet is to be educated about how you can be traced and to be very familiar with the capabilities and features of your phone.
Choose "E911" in the "location" menu on your phone. On some phones you may need to enable privacy mode instead. These settings will allow GPS tracking only in response to a 911 call, which is required by law. Menus are different on all phones so you may need to consult the owner's manual if you cannot find location settings.
Check for physical GPS tracking devices that may be attached to your phone. Look under the battery, in the battery compartment, and on the outside of the phone. Remove anything that did not come in the original sealed box or that you did not attach yourself.
Remove any tracking software that is installed on your handset. If anyone has ever had your phone for even a few minutes, he may have installed a third-party application that allows your phone to be tracked. Research any programs that you cannot identify.
Contact your mobile phone company and inquire about any tracking or monitoring features that have been enabled on your account. Remove those features if there are any and set a new password to prevent unauthorised access.
Remove the battery from your phone. This is the only way to guarantee the phone is untraceable. Cell phone towers can still triangulate your position to some degree when the phone is on, and "roving bug" software can make your phone a surveillance device even when the power is off.
Mobile phones provided by your employer may include tracking features and software. Using disabling techniques on one of those phones may result in your being reprimanded or fired from your job. If you don't want to be traced on one of these handsets, leave it at home when you are not on call or on duty.