You could misplace your phone, or drop it three feet and shatter the screen.

> This is an electric car with an USB charge slot

Is that to charge the car?

(Sorry, couldn't resist)

There are multiple causes of death for phones. My last one met its end when it slipped out of my hands and into a puddle of water. So it's entirely feasible that you could be out with your EV and end up with a dead phone and no gauges for your car. But that's probably not a serious problem.