Truecaller is a mobile app that helps identify unknown incoming calls, block unwanted calls through a community based spam list, where users helps report unwanted/spam/scam calls all over the world.
With the app installed on your phone, you can know who is calling before you pick up. Truecaller gives you the knowledge of who is trying to get in touch with you even if the number is a landline, mobile or pre-paid. Mind you, you can’t see who is calling you with a hidden number.
The mobile app simply has more features to make your phone smarter.
==> Truecaller NEVER uploads your phonebook to make it searchable or public.
==> 3G or WIFI is required for Truecaller Caller ID to work. Operator charges may apply.
You can download TrueCaller for iPhone, Blackberry, Windows Phone at TrueCaller website. TrueCaller apk file is also available for download right there.