How do I deactivate the SMS Spam Filter? Updated May 20, 2018 22:52 Follow To deactivate this feature, visit your iPhone settings: 1. Tap on 'Messages' 2. SMS Filtering > Disable Truecaller. Related articles Why do some numbers end up in SMS Junk? How to I filter spam messages on iPhone? How can I subscribe/unsubscribe from the Newsletter? I've deleted the app but I still get notified about spam calls (red screen) Spam calls are not identified or blocked? How can I block them? Comments 0 comments Please sign in to leave a comment.