I can’t feel vibrations on the thumb when I turn on. Sabrina Kemeny Updated February 17, 2018 21:33 Follow Download and open the TapManager App. Make sure that the Vibration Setting is ON. Related articles My Tap Strap won’t turn on. I am trying to pair but my device doesn’t see my Tap Strap How does Tap work? Comments 0 comments Please sign in to leave a comment.