[CoalPorter]

During setup, make sure you have good wifi for the EO unit but also make sure you have good mobile data signal - your phone needs to communicate with EO central whilst it's still connected to the EO Mini Pro that won't yet be online. I discovered this the hard way!

Not sure about that - we ended up doing the setup on my iPad (which has no SIM in it) because the process didn’t work on my iPhone 6S (apparently a known issue with that model). So it certainly wasn’t using the mobile network. In any case we have effectively no 4G signal at the house.