I've now confirmed that the service providers have to enable the function for each type of handpiece. In the UK there is no service that has any Asus on their list of approved handsets. I suggest it is up to Asus to negotiate with the networks. In th...
I had a lot of strange behaviour. Mine was one of the first UK phones. Alarms not sounding, lack of various notifications, some other random behaviours. It was up to date with ota updates. I finally did a complete reset last week. Now working perfect...