The phones of most people who have Android smartphones have a Truecaller app. Let me tell you that this is an app that tells you the names of unknown people who also call you. Perhaps you will be very surprised to know that today Truecaller has more than 500 million users, that is, so many people have downloaded the Truecaller app in their mobile.
Truecaller is available on all platforms such as Android, iOS, Window, Blackberry and Symbian i.e. you use any OS handset, you can easily download Truecaller in your phone. Truecaller gets Permission after downloading Truecaller. And that accesses our Contact List. And all the numbers in our Contact List are uploaded to their servers through Sync.
After creating a profile on S, your number is publicly visible. And when you are online, it is known in Truecaller. And the information about your last call is also shown in it. In such a situation, if you do not want any app to access your personal information, then you should stay away from this app, because in the future, when a hacker can break into your data.