Hi firends today I am giving review on very usefull mobile app TRUECALLER . I am using it from 1 year its too good for unknown calls . when unknown call comes you will instantly know about its all detail like real name, company name, state and city name etc. and if you want to know something about unnkown or any number its gives you perfect details.its installation is very easy just goto playstore and download it by verifying your number and then its starts. featuers and functions are good helps you to know all detail about people and you can also block calls and sms if you want to do and big thing that if any company calls or sms comes they informed instantly by red color so you can understand the value of call. easy to use and good for detail its automatically defult in your device as normal call, contacts, messages and you can call, sms also by using true caller .its service is good .but its need to have net connection for use it and sometime when call come its pop window disturbing to attend call or cancel instantly . so its good easy and usefull .thank you.