Surely, it must be a man out of time?
Sleuths on Facebook have spotted an odd-looking fellow in a black-and-white 1940s photograph where he appears to be using a device way too high-tech for the decade.
The mystery dawns back to 1943 in Reykjavík, Iceland, where the suspicious character is seen around deployed US soldiers during World War II, according to the Sun.
But this man isn’t in army fatigues. Instead, he stands out for wearing a lightly colored trench coat while holding his hand close to his ear as a modern-day cellphone user would.