Do you think such MacBooks will be ESIM-only?
I imagine that the provision of a SIM card slot would be relatively expensive and, by then, we can expect ESIMs to be more widespread than now.
Indeed, it would be quite neat if you could grab an installed ESIM from a phone and put it in your MacBook for as long as you need. Whether carriers would like that... (Maybe not if you have only one ESIM - but reasonable for a second ESIM.)
The fundamental problem with ESIM is that they cannot be moved between devices by the user. When “transferring” an ESIM, the ESIM on the new device must be provisioned by your telco.
Apple and Google have tried to make this easy for the user by automating the process, but these nice flows only work if the carrier supports it. And outside of the US, most carriers don’t.
Many telcos in AU/UK, if they even support ESIM, require you to provision a new sim via their app. The app is often locked behind SMS 2FA on the number you’re trying to manage. So if something goes wrong, and it always does, you’re locked out of the app.
Optus in Australia won’t provision a new ESIM over the phone because they leaked all the information they use to verify their users identities. So you need to visit a physical store to move your ESIM to a different device. In the UK, O2 can only reprovision an ESIM on the same device. If you want to “transfer” your ESIM to a new device, you need to pick up a physical cardboard QR kit.
Oh, and it seems many carriers only allow ESIMs to be provisioned in their respective country of origin. So if you’re on holiday and break your phone, you need to spend thousands on an emergency flight back to your home country to provision a new ESIM, because every company under the the sun is forces SMS 2FA on us against our will, so without your sim it’s bye-bye email, banking, iCloud etc.
ESIM is great in theory, and terrible in practice because most telcos are criminally incompetent.
The ESIM spec needs to allow the user to move the ESIM between devices without involving the carrier. Until then, ESIM is useless for most of the world. I absolutely dread the day Apple removes the physical sim from other markets because it’s going to make my life hell.