TrueCaller is the semi-shady app that spreads the contact details of millions of people potentially without their knowledge. The way TrueCaller collects contact data is by copying the phonebooks of users who download the app and give it permission to do so. If you best buddy downloads TrueCaller and your number is in his phone book now TrueCaller has your phone number and name without receiving permission from you. This is actually a pretty awesome tool when it comes to having numbers for those unknown callers, and can save your some frustrating moments like getting a call in the middle of family dinner. If you don't see the appeal of everyone else being able to access your contact information through the TrueCaller app there is now a way to unlist you number. -Open the TrueCaller app, tap the menu in the upper left corner, go to settings/about/deactivate account -Head over to the TrueCaller Unlist page -enter phone number and correct country code -choose a reason for unlisting you number -and choose unlist It is unfortunate that you have to go through all of this to protect your privacy. Once you have completed the process it will take no longer than 24 hours for you number to be unlisted. Has anyone tried this? Did you have success?