In addition to the caller recognition function, which you need a WiFi or 3G Internet connection to use, TrueCaller includes some other interesting features. For example, you can use photos from Facebook, Twitter, or Google Plus to personalize the screen that shows up when your friends and contacts call.
When you receive calls from unfamiliar numbers, TrueCaller will tell you how many users have marked the number as unwanted. That helps you quickly figure out if the call is interesting or important - or not.
TrueCaller is a useful app for anyone who has had it with telemarketers and other unwanted calls. When this app installed, you'll never have to deal with unwanted calls again.