Thank you very much for your most appreciated support. so, via the app, I login to the account of my line which is on the broken phone and I want to transfer to the iphone, and then I purchase a new eSIM, and automatically my other line is registered...
Thanks a million, your reply was very helpful. I am just a bit concerned as am not sure by buying an new sim or eSIM for my existing line to add it to a new phone will not cause any interruption or cancelation of my line/number.