Double check on the specifics. But I would assume in an ideal world, EE systems would pick up the fact that you two numbers are linked and that one is a rolling data plan and just discount it. But as it is a new feature, this might not be the case and you would have to cancel and reset back up. In either situation, you would still have a separate number showing for the watch for billing reasons even though the price will be reduced to zero. Again in an ideal world they would link the two together by the IMEI for example and avoid having a separate number. But that’s not how they link them. It’s by phone number, this is partly due to the relay service that is needed to ensure normal sms are sent to the watch. And also the reason why you wouldn’t get a normal sms on the watch if the phone is switched off because the phone receives the message and then relays it to the watch number.
