Hi @Christopher_G
one is for my phone and one for my new Series 8. I have an Series 5 already and want to give it to my child. EE sales team said, based on my credit history, EE could only offer 2 lines for me now. If I buy a new Series 8 from EE, the Series 8 needs a airplan for it. So one of the number would port to the Series 8 and the another one port to my phone. Finally, there is no room for my child's Series 5. They only way that could be sorted out is, I cancel the contract for the new series 8 and return it back to EE. After EE received the series 8 at warehouse, the number would be released and allow me to set up data plan for my existing series 5.
Actually, it doesn't make sense that I order a new watch and use the room of the line which it is map with my phone number originally. Because the watch is a plan to make it works, authorize a number to the new watch and made all the room full.
