Back in the UK Jim. It has been working fine (in the UK) since the replacement SIM was installed last November, and worked perfectly in France right up until some time on Sunday midday, having searched for hotels online on the Saturday evening, and ut returning not only hotel details (including addresses and telephone numbers, but also Trip Advisor ratings. The weather and news functions were also working,
At some point yesterday it dropped and has since shown SIM not supported under the Media option in Connectivity settings. I have been to 3 and had a replacement SIM, with no change, still shows SIM not supported, yet both sims work in other devices including my iPAD 2 and iPhone 7 as well as a Galaxy tab in the 3 shop.
My O2 sim is also working in the car without issue, so I don't know fi it is something specific to 3 mobile broadband sims one not. I checked the my three account, and the SIM was set got international roaming (else I expect it would not have worked in France).
I'm at a bit of a loss as I can see 3 saying (as they did in the shop) that as it works in other devices there is no issue, and the fault is with the car. And Jaguar (I assume) will say that as another (the O2) sim works in the car, the fault must be with the 3 SIM, so I'll be left in limbo with a £45 SIM that is rendered useless, and I will have to change to an alternate carrier.