If I understand your post correctly, you are using an eSIM and you'd like to know if you'll need to contact your cellular provider again if you factory reset your iPhone. I’d like to help. While you won't need to contact your carrier, you wi

A factory restore erases the information and settings on your iPhone, iPad, or iPod and installs the latest version of iOS, iPadOS, or iPod software. Get your device ready Make sure your Mac or PC is updated.

If you cannot access to a computer when you want to reset your iPhone to factory settings, you can also wipe information directly from your iPhone and restore it to factory settings. Step 1 Tap the main Settings icon on the home screen, select General fro