Place your finger on the home button and follow the instructions that appear on the screen to capture your fingerprint. When prompted, touch. Activate any of the options, and then follow the instructions that appear on the screen. When prompted, enter your iPhone's passcode.
Then, on the Touch ID & passcode setup page, tap Add fingerprint. After the launch of the iPhone X, Apple removed the Touch ID feature from iPhones and replaced it with a feature known as Face ID.