How to Change a New iPhone Passcode If You Forget It
In iOS 17 and iPadOS 17, it is now possible to reset an iPhone or iPad’s new passcode with the previous passcode you used for up to three days after the change is made. In other words, Apple lets you use your old passcode within 72 hours of setting a new one, which is handy if you’re someone who is likely to forget a newly created passcode.
When you enter an incorrect passcode on a device running iOS 17 after making a change, simply tap on the Forgot Passcode? option at the bottom of the display to use the Try Passcode Reset option. Tapping it allows you to use your old passcode to create yet another new passcode.
For protection in case someone has learned your passcode, there is also an “Expire Previous Passcode Now” setting that you can make use of.
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