Detecting The Name Behind an Unknown Caller's Number Using Whozcalling

WhozCalling is a very popular cross-
platform mobile App that allows users
effectively monitor incoming calls from
unknown numbers that have not been
saved in their phone-book. It is a good
alternative to truecaller which also serves
the same purpose. With this application
installed on your phone, you will need to
enable the 3G service or Wi-Fi in other to be
able to view the name behind an unknown
incoming call from numbers that have not
yet been saved to your phone.
This App which can be used on any mobile
phone can be downloaded and installed on
your device by
Visiting www.whozcalling.net using the
mobile phone you want to install the
application on.
Please do not use PC to access the
WhozCalling website as you will be told to
visit from your mobile phone instead.
When on the page, click on the logo
representing the mobile platform your
phone is running on to be directed to the
page where you can begin download of the
application.
Once the download is complete, run it and
you can begin searching for the name
behind any unknown number that call you.

This app doesnt have a big database like truecaller. Its not so bad but i think i would choose truecaller instead of this.