Truecaller is one of the most useful applications. One should have truecaller in their handset.
Truecaller is an application via which we can find out the unknown caller. Whenever I get a call from any unknown number, I do not receive the call at first. I check the number at truecaller and then I call back if I recognize the caller.
Apart from knowing the real caller the other features like spamming or blocking the unwanted callers are also very helpful.
Overall a very good application!
Highly recommended!