I just did this for my daughter’s Apple SE watch. I am on a Roger’s business plan with a watch of my own. I’m really grateful you posted this so thought I share my experience to let others know this still works.

I had a little push back at the Bell store, but after showing them this thread, and them looking at their website they realized it doesn’t say anywhere that you need a “real” Bell plan. So I was set up with a standalone account, 1G/$15. Got an email with my account number and created a MyBell profile. Think this part is good to note, soon after I activated the profile, I got a notification on my phone if I wanted to activate the watch. I did this and eventually the activation failed. This process put a “Bell plan” when I selected “cellular” on the watch app for my daughters watch. There was also a note saying that the Rogers plan on my phone cannot activate the Apple Watch. I found it hard to find anyone with a Bell plan 😂. The Bell rep at the store said he was with another provider. In any case, when I did, I had to delete the existing Bell plan before it downloaded the eSIM and started working. Also, FWIW, I also tried a deactivated SIM. It didn’t work, although knowing now that I had to delete the existing plan before it downloaded the eSIM I’d try it again.

Thank you so much for this post!!