Stwutter is wrong in one of his posts. People are better with their phones than they used to be.
10 years ago, I was working for a well known mobile company, lets call them Tangerine!
The callers we got included people who couldn't turn there new phone on, people who didn't know how to charge their phone and acted surprised when told it would need it! One famous call type was the numpty who had managed to switch the phone into Turkish or Greek and now couldn't get it back. ( The handbook told you how to do this but better call for help?)
Another popular one was to dial only the local number because they were in the town they wanted to call!
I retired 2 years ago and by then we had far fewer calls of this nature, however, never underestimate the power some people have to confuse themselves.
The original poster has asked a valid question, how we used to like a sensible question among the rest!