Sim eSIM on mobile to transfer to watch sim on apple watch

[Rby]

Is it possible to transfer mobile sim to apple watch eSIM ?

[Chris_B]

@Rby   The eSIM on the watch gets activated when you take out a contract for it.  Only once it’s live could it be possible to put a number on it.   Via customer services.    You also need an iPhone on a contract in order to have a tariff on the watch you can not just have a watch on contract. 
 
 Obviously this number can not be the number you use your contract phone because if this was achievable this would also terminate your phone contract as moving a number off a line is a termination.  This will mean you pay off the contract in  full in one go.  

Is this a spare number you have.     ?  

[Rby]

Yes it’s a spare I had to take due to poor coverage from 3 I have a poxy year left with them

[Chris_B]

@Rby   You can not have a watch on contract unless there is an iPhone on the EE account already.  You can not have a iPhone on one network and a watch on another.