How can I unlock my phone, I forgot my passcode.
I have an old iPhone that I was trying to reactivate with service but I forgot the passcode.
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If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -
Click on the link for instructions on how to reset your passcode without a computer if you have iOS 15.2 or higher.
If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support
Click on the link for instructions on how to reset your passcode using a computer.
If you forgot your iPhone passcode - Apple Support