After a shaky, difficult, time-consuming start trying to set up an account online for Mifi, given that the lockdown at the time prevented shop visits, eventually, all seemed to be in order and the Mifi hub duly arrived. I then had some issues where messages were being sent to the Mifi to reset passwords which I could not read as they did not send me access to the Mifi control panel. A fruitless 1-hour call to Three with an eventual escalation to a more senior advisor resolved this and all worked well for 3 weeks.

We now have virtually no internet access - signal strength to Mifi hub is good and it is reporting a good signal to the mast. But the data speeds from the mast fluctuate daily from less than 0.3Mb/sec up to a current maximum of 1.6Mb/sec which is just barely enough to run a Roku TV box.

All we have seen for at least 4 weeks now is the same report that they are working on a nearby (unspecified) mast and that other masts in the area are slower as they are distributing the additional load. What is suspicious is the fact that the 'fault' report time is always a minute or two before you log in to check on the network status.

Try and talk to Three about this - forget it. At the moment we are at the point of starting an account with another supplier and arguing to cancel early with Three after only 4 months as we have no confidence in them as a supplier.