This app is really good at finding location of unknown messages, calls, many times it also gives you the owner name also, there are many applications available, but this app really works great, this app does everything smoothly and without paying a rupee.
It also give you options to mark people as spam, and also allow you to block, such as telemarketing calls, when a unknown number is calling your cell phone it automatically searches that unknown number and shows a statistics of that number, i.e shows how many people had marked that unknown number as spam or blocked.It is a must-app for smart phone users.