Final answer:
To change the Caller ID on an iPhone, access the Settings app, tap Phone, and then Show My Caller ID to toggle it on or off. However, for altering the Caller ID name or number, contact your carrier.
Step-by-step explanation:
Changing Caller ID on iPhone
To change your Caller ID on an iPhone, you need to access the Settings app. Once opened, scroll down to Phone and tap on it. Inside the Phone settings, look for the option Show My Caller ID. Toggle the switch next to Show My Caller ID to enable or disable this feature. However, it's important to note that this option might not be available in all regions or with all carriers. If you need to change your Caller ID to a different name or number, you would typically need to contact your mobile carrier, as Caller ID is a carrier-level feature.
If you seek to change the actual contact information, such as your name or number that displays on other people's phones, you will need to update this information through your carrier or possibly through a third-party app that offers such services.