Pretty sure it's been the norm for a while - my 3 year old iPhone supports multiple SIMs. I just changed carriers (including porting my number) and it was a pl

Pretty sure it's been the norm for a while - my 3 year old iPhone supports multiple SIMs. I just changed carriers (including porting my number) and it was a pleasant experience. Through an app, the new carrier added a new eSIM (and temporary number) and started the port process. When the port was done, it automatically updated my new eSIM with my original number.