How does truecaller application work

According to the Truecaller website, if you see their privacy policy when install and use their services they collect the following personal data from your mobile phone.

Your IP address. Geographical location. Facebook page. Device manufacturer and type. Device ID or unique identifier. Device and hardware setting. SIM card usage. Applications installed on your device. Ad data. Email ID. Photo and gender.

Zip code, address, and country. Content viewed by you. Keywords and metadata of incoming and outgoing calls and messages. Device log and event information. Default communication applications.

Access to the device address book. Screen resolution. Operating system. Web browser. The content you have commented on. I marked a number as spam by mistake? Hi there! The location found was wrong Can I remove the name in the brackets?

Alternative name I did not receive Premium after inviting friends to Truecaller I cannot find Truecaller in my Market store? Watch Video Here! I can't activate my Truecaller account code is not received I still see ads after purchasing Premium How do I enable the 'Flash' feature?

Truecaller achieves this in a two-fold approach. This allows users to identify and block spam calls locally from their iPhone and Android devices, even without an Internet connection. Note: Depending on your situation, you might sometimes receive important calls from numbers that are identified as spam on Truecaller. For example, if you have purchased a new SIM card, verification calls may come from phone numbers that have been marked as spam, as such numbers might also be used for telemarketing purposes as well.

However, recently the updated app has become much more usable for the live caller identification feature. However, that being said, there are still some limitations of the iOS app, when it comes to live caller identification.

In order for live caller identification to work on iOS, it is mandatory for both the caller and receiver devices to have the Truecaller app installed and also be connected to the Internet as well.

If the caller is an Android user, the receiver will get a caller ID notification for incoming calls. If the caller is an iPhone user, the receiver will only get the caller ID notification, when the caller uses the Truecaller dialer to initiate the call. Due to such implementation, you might notice that sometimes, the caller ID notification is pushed to your iPhone before the actual call comes in.

This is because, push notifications are often faster than the time it takes for the PSTN to connect the two parties may not be applicable for VoLTE calls.

And so, no caller ID notification is sent to the receiver in this case. On the other hand, the spam call identification feature will only work for calls to your iPhone.

Truecaller on Android can directly perform a live lookup of phone numbers as soon as an incoming call comes in, as the platform provides the required permissions to do so.