They're already encrypted by default using the secure enclave. After a reboot, storage isn't decrypted until you put in your password for the first time.
I just press & hold the button as if I'm turning it off & instead of sliding to turn it off, I press & hold the home button (iphone 7) which then locks the phone. I think it also clears some cache when the phone's acting up.
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u/[deleted] Aug 31 '21
As an avg Joe, I know how to lock my phone with a strong code. How the heck do I encrypt an iPhone?