I mean, otherwise would be like not being bound to speed limits if you don't have a speedometer.
If something doesn't work without your phone, report it being broken. If they tell you to use your phone, tell them you don't have one. If possible, leave their service, if they don't care.
We have to make it their issue as much as possible, when they try to push their shit onto us.
Surprisingly often there is a workable alternative to using ones smart phone. We have to make use of those as much as possible, so that the cost for them to get rid of those options will be high and they think twice before doing that and offending us.
That only works in a world in which the government provides speedometers, which restrict the vehicle automatically, and in this case they refuse to provide them at all for blue cars.