I forgot the passcode and need to reset my iPhone
Forgot passcode
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Your only option is to reset (erase) the device and restore from a backup.
You WILL need your AppleID credentials.
How to reset your iPhone, iPad or iPod touch if you've forgotten your passcode – Apple Support (AU)
Note: If your iOS version is prior to 15.2, you’ll ADDITIONALLY need a cable and computer to complete the supplemental instructions linked near the bottom of the article.