The Phone app is one of the most commonly used iOS apps on the iPhone. You can find a handful of features in the Settings->Phone. For instance, you can configure your caller ID to be either shown or hidden when making a call.
However, occasionally, you might wish to display or hide your caller ID for specific individuals or businesses without having to reset this setting from the Settings menu for every single call, which can be quite laborious. Here are two tips for using the Phone app to achieve this temporarily.
Use the code #31#
before your phone number to hide your caller ID, like in this example:
Use the code *31#
before your phone number to display your caller ID, like in another example:
Those codes are very easy to remember. Think of *
as a star presenting you, and #
as a fence hiding anything. The remaining codes are the same.