why my phone constantly vibrate with no mons pop up

Not sure im getting same thing happen. It's kind of annoying as keep looking down at phone to nothing being there

Yeah, it's a near certainty that my phone will vibrate during any animation, and that after the animation is over there will be no new spawns at all

It's vibrating when the nearby tracker is changing. It makes me crazy, everytime looking to your screen to see nothing.

I'm glad I found this! I was just evolving and my phone would vibrate like it does when something pops up, but nothing was there. I turned my volume on, the music and notifications..but that didn't help either. I thought maybe it was my battery charger so I disconnected it. None of those things helped. Maybe it's the new update??

Yes. It's driving me nuts as well. I hope they correct this soon.

It vibrates to alert you that a Pokémon is near you but not close enough to pop up.

Ah, so others are experiencing this as well. Thought something was my game was not correct. They should definitely fix this, this is super annoying.

Totally, me too, super annoying. It's a bug they should fix ASAP

Sometimes yes, but sometimes no.

It doesn't sound like a bug, although I don't like it. At the same moment the phone vibrates, there is a fast sign at one of the three pokemon that always appears on the right bottom of the screen, meaning he is really close, but not enough to pop up. It looks like the radius used to vibrate the phone got about five or ten meters bigger, while the radius for the pokemon to pop up remained the same.

Like someone earlier mentioned it looks like it buzzes when you are near a pokemon. Because then it buzzes again when it pops up.