So using a 3rd party app to send/receive these kind of confidential messages might be little bit risky. Many times we receive OTP from email services, banks, etc to login to their websites and make transactions. Lots of people regularly receive important messages from offices, banks, etc. There is no harm in using Truecaller as default Phone or dialer app as it can identify incoming and outgoing mobile numbers but we should be very careful while using Truecaller as default SMS app. Truecaller takes over the default or stock Phone as well as SMS messaging apps and sets itself as the default Phone and SMS app so that it can identify and block spam calls and messages. If we receive a new call from unknown number which is not stored in our contacts list, it shows the caller name using its huge database which helps us in knowing who is actually calling us. Truecaller app helps in identifying genuine or spam calls in advance before attending the incoming calls. Many people use Truecaller in their smartphones to block spam calls automatically and know the caller name if the mobile number is not saved in their phonebook. Truecaller is one of the most popular and widely used Caller ID apps for Android mobile phones and Apple iPhones.

What is truecaller id