Yes, a cell phone - in 1923 before there were cell phone towers, private phone lines, and more. I remember back in the late 80's my grandparents had a "party line" where they shared phone line with several families.
I also remember the first cell phones - and they were much bigger than what the "time traveler" is carrying in the clip below.
Some say that the explanation is simple. The Charlie Chaplin time traveler was simply wearing an old-time hearing aid. Some skeptics are quick to point out that she's not talking to anyone--but perhaps she's simply adjusting it so she can hear what's going on around her?
So what do you think? Is the Charlie Chaplin time traveler for real, and does the explanation make sense?