When you make a phone call, the antenna’s are used 100% for calling and using data is disabled (or at least, it used to be). Android might thus “pretend” that it is still connected.

There are some who repurpose some Ikea-stuff as server racks: https://duckduckgo.com/?q=ikea+server+rack&iar=images&iax=images&ia=images&iai=https%3A%2F%2Fi.pinimg.com%2Foriginals%2F81%2F84%2Fab%2F8184ab11849051f4fa0f66f50b0ac97d.jpg