>There is 0 reason a modern phone couldn’t be used for the rest of your life.
At some point we must reach peak tech. In the Elite: Dangerous universe, there are quite a few ships you can use, but the majority of them are designs that are hundreds of years old. They are modular spaceships, of course, so they have received upgraded technology as time has gone on, but there are some quirky little ships flying around.
Compared to phones though, we'd need to get carriers to guarantee their old networks stay functional so old cellular radios will still function. Maybe when tech advances enough we CAN have a modular phone it will be less of a concern.