A passcode is your iPhone’s first line of defense against unwanted access when your phone is stolen. Apple lets you set four-digit or six-digit passcodes for phone security, and if you really want to take things up a notch, you can even use an alphanumeric passcode.  Once a passcode is enabled, the data on your iPhone is automatically encrypted, adding another layer of protection. While Face ID or Touch ID are easy ways to unlock your iPhone without a passcode,
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