To block a number on an iPhone, you would not use the *67 or *69 codes. These codes serve different purposes. Here are the steps to block a number on an iPhone:
1. Open the Phone app on your iPhone.
2. Go to the "Recents" tab or access the specific call log entry of the number you wish to block.
3. Tap on the "i" (info) icon next to the number you want to block.
4. Scroll down and tap on "Block this Caller" or "Block Contact." The wording may vary based on your iOS version.
5. Confirm your action by tapping "Block Contact" or a similar option in the pop-up window.
By following these steps, you can effectively block calls, messages, and FaceTime requests from the selected number. The blocked contact will no longer be able to reach you through any of these methods.