What is the fastest way to share contacts on an iPhone?

The fastest way to share contacts on an iPhone is by using the Share Contacts feature. This built-in function allows users to quickly and easily share individual contact details through various methods such as AirDrop, Messages, or email directly from the Contacts app. This method is designed for quick access and facilitates immediate sharing without the need for additional settings or apps.

Using iCloud to export contacts typically requires additional steps, such as logging into an iCloud account on a computer and managing exports, which makes it a less efficient choice for quick sharing. While AirDrop can also be a fast way to share contacts, it falls under the umbrella of the Share Contacts feature and requires additional steps to select AirDrop specifically. Third-party apps could offer sharing functionalities, but they usually require installation and setup, which delays the process compared to the streamlined integrated option provided by the Share Contacts feature.