Truecaller never uploads your phonebook to make it searchable or public. 3G or WIFI is required for Truecaller Caller ID to work. Operator charges may apply. The block text feature is currently not supported for devices with Android 4.4 (KitKat).
What's new in this version:
Version 6.01 Try Caller ID in our new Dark theme (Set your theme in Settings - Caller ID). See more details about who's calling: Detailed location, Operator/Carrier (e.g. Airtel).