In 1912 (at least in the UK) very few people used telephones and not many could afford a cab fare either. Telephone despatching services began to appear in US cities in the 1920s, with drivers using 'phones located at cab stands to make occasional contact with their base office. Before that, you either headed for the nearest main road to hail a passing cab or sent a servant to hail one for you. Servants were cheaper than telephones!
In 1912 Connecticut, we must have had Taxi cabs because I know we had "livery" type license plates. Livery as in "Hired" cars. That term and plate now is used only on Limousines. I doubt you could hail a yellow model-T cab, but I'm sure you could hire a car to pick you up at the steamship terminal and bring you to the Hotel Astoria!
Trixie Witherbee, a Lusy survivor,told an amusing story about her experience in a NY cab once, circa 1912.
She was so busy gathering things, and paying the driver that she accidentally left her sable coat in the cab. When asked if she tried to get it back, she replied, "Aww, Witherbee (her husband) would have bought me another one!"
Captain Smith left home in Southampton for the last time by hired motor-carriage. A number of telephone exchanges in Britain had already been in operation for a quarter-century. (Fortunately, Mr Bell's eccentric suggestion that 'Ahoy!' begin conversations had never caught on!) Among London's first 'Subscribers' had been Queen Victoria; whose private telephone number was 'KENsington 3'. The term 'train' and meaning just the same thing - even complete with 'railway'! - long predates invention of the modern steam engine.
I'm sorry, I didn't understand the last part of your August sixth post, but now I do. Thank you for your time; it's very much appreciated. I just want to get the little details of the era precisely correct.