<human>:  When I’m on LTE, why do I sometimes get a signal strength of 0?
<bot>: That’s because you’re on a dead-end cell. You’re not actually connected to the cell you’re supposed to be on. This is a common problem with LTE, and it’s called a “cell outage.” It’s usually caused by a problem with the cell tower, but it can also be caused by a problem with your phone.