Rob has a smartphone from Verizon and he keeps getting dropped calls on it. He will still be connected to his girlfriend, but she can't hear him talking. Leo says it happens all the time on just about every cellphone network. It's not really just Verizon. If he's in rural areas, he could have spotty coverage.
The reason he might not hear much about it is because people don't really use their cellphones for voice calling much anymore. Dropped calls happen during handoffs between towers, and there really isn't a fix except to call back. The thing is, that when we went to digital, it will just stop working instead of just degrading like analog would.