How do I change T9 language? Follow Tap on the Truecaller menu (top left corner) 1. Tap on Settings 2. Language -> T9 Language Related articles Is Truecaller a VoIP service? How do I find a person’s current location? What is Availability? (Last seen) Call Recorder - FAQ How to make Truecaller your default phone & SMS app Comments 0 comments Article is closed for comments.