I assume other people are curious about this too, and here is what I found out so far:
If you have even a regular SIM card, obviously with the 14 we will need to switch to eSIM tomorrow when our 14s come.
Verizon says you need to call them to get a QR code to do so.
T-mobile says they support something called SIM -> eSIM quick conversion so in theory we can follow their guide to switch over to it. ATT seems to support quick conversion as well.
Apple themselves says when you are setting up the phone that it will attempt to port a SIM over to an eSIM using this quick conversion automatically. In my experience this is going to be somewhat of a crapshoot and depend on your carrier. Even the big carriers don't reliably work well for conversions and moving around eSIMs.
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So the TLDR: I BELIEVE you just have to have your old phone and new phone near each other when you set them up, and Apple's guide will attempt to convert your SIM on your old phone into an eSIM that works on your new phone. This process is sort of flaky so you may have to call your carrier or go into a store and have them do it in the worse case.
If you have even a regular SIM card, obviously with the 14 we will need to switch to eSIM tomorrow when our 14s come.
Verizon says you need to call them to get a QR code to do so.
T-mobile says they support something called SIM -> eSIM quick conversion so in theory we can follow their guide to switch over to it. ATT seems to support quick conversion as well.
Apple themselves says when you are setting up the phone that it will attempt to port a SIM over to an eSIM using this quick conversion automatically. In my experience this is going to be somewhat of a crapshoot and depend on your carrier. Even the big carriers don't reliably work well for conversions and moving around eSIMs.
----
So the TLDR: I BELIEVE you just have to have your old phone and new phone near each other when you set them up, and Apple's guide will attempt to convert your SIM on your old phone into an eSIM that works on your new phone. This process is sort of flaky so you may have to call your carrier or go into a store and have them do it in the worse case.