My world is about 60 years out from the start of mainstream industry (that's vague: roughly late 19th/early20th century, earth frame) . For my convenience, I gave the world the gadgets I need them to have, and I withheld others.
They have pipelines, power lines in the cities, and refineries. They have automobiles and other automated tools, and still have horse/buggy. I now plan to exclude security cameras, since the answers uniformly indicate that's a problem, and I agree. But, power lines in the cities are still in place. Too much depends on those. Perhaps lines between cities are not yet laid because of distance.
They don't have telephones, or the telegraph. This is for my convenience as an author. I want inter-city communication to be inconvenient. They have newspapers and couriers, but no instant communication technology. There is one electrified fence; there is electricity.
Is it reasonable that my world would not have telephones? In light of the fact that they have cars and electrical wires. Telephones are such a work saver. I don't know if it is believable that in this world they wouldn't. Maybe the technology is so simplistic that any civilization would figure them out.
Is it reasonable that my world would not have telephones?