Sounds like you live in a big city? In the rest of the UK, there are many many places, even in large towns of 100k+ people, where the mobile signal is absolutel

Sounds like you live in a big city? In the rest of the UK, there are many many places, even in large towns of 100k+ people, where the mobile signal is absolutely terrible. Whether it's 4G or not doesn't matter if the signal is too weak to sustain a reasonable speed.