A Zero will thankfully vibrate a phone less than an ICE bike.
However, I have had an iPhone 7 "bricked" by wearing on the Lightning charging port because I was charging while riding from my USB outlet, and the cable over time was applying lateral force inside the inlet. This probably related to some dense cockpit layouts I use while traveling, using a tank bag, phone holster, and a couple of other items near each other. After a while, it wouldn't take a charge so I traded it in. Now I'm more careful to ensure the cable doesn't apply any forces to the phone.