Random Vibrations w/ No Notifications

iPhone 16 Pro
iOS 26

Hey guys. So for the past month I’ve been getting random vibrations on my phone. Lately it’s now driving me crazy.

I can’t find the cause of it. It doesn’t light up. The screen doesn’t have any type of new notifications at all.

I really don’t want to reset all of my settings. Is there any way to diagnose this? Because it’s becoming a drain now.