What do users need to do to reset a forgotten iPhone passcode?

To reset a forgotten iPhone passcode, using Recovery Mode to restore the device is the correct method because it allows for the complete erasure of the device, including all its data, thereby bypassing the passcode. When Recovery Mode is engaged, the iPhone can be connected to a computer with iTunes or Finder, where the user can choose to restore the device. This process effectively removes the locked passcode, granting access to the device once again, albeit with data loss unless a backup exists.

Other options do not effectively address the situation. Contacting Apple Support may provide assistance, but it does not result in the immediate removal of the passcode. Entering the wrong passcode several times will eventually disable the device temporarily and does not lead to a reset. Removing the SIM card and restarting does not impact the passcode and leaves the locked status unchanged. Thus, the most effective and direct approach to reset the iPhone passcode is through Recovery Mode.