How to unshare all access to other devices
How can I unshare all access from my device my wife has took “control” a little to insane and now she can literally mirror everything I do on my device
iPhone SE, iOS 14
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Stop sharing the same Apple ID with your wife. Get your own or if she is using yours change the password and tell her to create separate Apple ID.
If not done yet, enable 2 Factor Authentication on your Apple ID.
Change passcode on your iPhone (and any other Apple device you own) and reset Face/Touch ID settings before setting it up again.
Under Settings > My Apple Id > Find My see if and with who you share you location.
You might also want to consider to change passwords for any social/email accounts you use in case your wife has access to it too.
Oh, and talk to your wife; maybe set some boundaries…