Earlier quoted context omitted.
> but it doesn't make sense to allow multiple devices per number anyway Why not? This is a useful behavior that is currently emulated by forwarding calls to laptops and tablets with the same account when the devices are on the same Wi-Fi. You could get rid of the Wi-Fi requirement if those devices all simply had an eSIM with the same number.
Number assignment is handled at the network level. I have the exact functionality you speak of (single number to multiple devices) on my company's good old physical SIMs. Phones & SIMs don't even know nor care about their own number. The SIM has a field for that but in fact it's often left empty (iOS devices discover their own number by texting a known Apple number and getting the response via the Internet, they'll t…
TIL! Is that why in some countries and some SIM cards my iPhone can automatically report its own phone number (when I look at my own profile under 'Contacts') and in some countries it doesn't do that?