iPhone Caller ID can be blocked, here’s how

You can make all of your outgoing calls appear as “Blocked” on recipients phones by disabling your Caller ID on the iPhone:

• Tap on Settings
• Tap on Phone
• Select “Show My Caller ID”
• Tap the switch to “OFF”

Now when you call people from your iPhone, your caller ID will be disabled and your number will appear as “Blocked” rather than a list. This is helpful if you prefer to remain anonymous, or you just don’t like caller ID in general. I imagine this works by just adding a *67 prefix to outgoing calls.