I thought the update had fixed it - it worked on the way back from the dealer but hasn't since.
The device is visible on the network page, so it's seeing the device, but putting the password in just results in a circling timer. I changed my phone last week and it used to see that one as well, so don't think it's a phone issue. If you leave that page open when driving it will also pick up wi-fi networks that you happen to pass.
Frustrating thing is that the "live" trial starts on delivery and lasts 6 weeks - that's now expired. Dealer suggested speaking to Mazda customer service to reinstate...
The old TomTom system was much better in this respect. No phone needed as gsm was built into the car.
Alan