T-Mobile actually kicked off its 2019 prank a few days early when it launched its Phone BoothE. A plausible, yet utterly ridiculous idea, the phone booth is exactly that -- a retro phone booth where people can make private calls. To make it clear that the company was playing a prank, it has rolled out the personal version of the technology "Mobile EditionE" -- essentially, a cardboard box designed for people to wear on their heads.