my phone randomly just started vibrating a few days ago at random time with like one or two maybe three separate vibrations. there are no notifications that appear when this happens. i’ve tried restarting my phone checking my setting/ notification setting but to no avail.
[Re-Titled by Moderator]
iPhone 13
Hi advocate_,
Thanks for posting in Apple Support Communities.
We understand your iPhone is randomly vibrating. If you haven't done so, make sure iPhone is updated to the most recent version for your iPhone model to ensure performance fixes are installed. If you're already running the latest software and this continues, contact Apple Support to look into this further for a solution.
Regards.
If you have Pokémon Go installed, that is the culprit.
See the answer from stedman1 here -
iPhone Vibration - Apple Community
IS IT REALLY? why and how does it do that
Apparently there is a bug in the program that causes this.
iPhone vibrates but no notifications
