1. **Use a *67 prefix**: In many countries, including the United States, you can block your caller ID on a per-call basis by dialing *67 before entering the phone number you wish to call. For example, you would dial *67 followed by the recipient's phone number.
2. **Follow your phone's instructions**: Depending on your phone carrier and location, the process for blocking caller ID may vary slightly. Some carriers may use a different prefix, so be sure to check with your carrier for specific instructions.
3. **Call as usual**: Once you've entered the *67 prefix and the recipient's phone number, simply place the call as you normally would. Your caller ID will be blocked, and the recipient will see "No Caller ID" or "Blocked Caller" on their phone.
It's important to note that while blocking your caller ID can be useful for maintaining privacy, some people may not answer calls from blocked or unknown numbers. Additionally, blocking your caller ID may not always work, as some phone carriers and services may have features that prevent calls from blocked numbers from going through.