Using a Basic Passcode
All of today’s modern iPhones come with either Touch ID or Face ID, but that doesn’t mean that the trusty passcode is obsolete. Consider that someone may be able to use your face or finger to unlock your device while you’re sleeping. Plus, U.S. authorities aren’t allowed to force you to give up your passcode.
Because of that, you’ll want to opt for a good, secure passcode. We recommend going with a 6-digit passcode or an alphanumeric one. Don’t just use your birthday or the same exact numbers in a row. (And if you ever need to, you can quickly disable Face or Touch ID by pressing and holding the Side button and one of the Volume buttons.)