RE: Can someone duplicate/clone your iPhone and hijack your whole device via the eSIM?

Cloning a SIM or eSIM only allows someone to use your cellular telephone number with their device. It does not magically grant them some hollywood’ish back door hack into your device to seize control of the operating system and all your data. It does not provide any means for anyone to get into your iCloud account either.

An iPhone SIM or eSIM contains nothing more then the bare minimum information required by your cellular service provider for your device to connect to their cellular network under your account with them. It contains no personal data at all.

Cloning a SIM allows fraudulent use of your cellular service account. That’s it. That’s ALL cloning a SIM does.

And note that AppleID 2FA codes are NOT sent as SMS texts. By default, they are sent as encrypted iCloud notifications, over the internet. Encrypted iCloud notifications are end to end encrypted. Apple explicitly designed 2FA to NOT use SMS or telephone voice codes other than as backup systems.

Even if a SIM could be cloned to receive verification codes they are no use without the AppleID password which is 128 bit encrypted.

Stay away from paranoid user threads is my advice.

You don’t have to be qualified to spot the tin foil hat brigade.

Never have never will.

It is why I moved to iphones and why I take care of my passwords.