You’ve probably been using the same passcode on your iPhone for years ... to originally set up the device to use it, but it will reset the passcode system so you can set a fresh one (hopefully ...
If you forgot your iPhone passcode or iPad passcode, you can use recovery mode to unlock your iPhone or iPad. To access the recovery mode, you need a computer and a cable to connect your iPhone to the ...
If you're an Apple user, then you know the value of your Apple ID and password. You can't access Apple services like iCloud, ...