To add a fingerprint that you can use to unlock your phone, the device will need to record your fingerprint pattern. This requires multiple scans of your fingerprint at different angles in order to guarantee a safe and secure unlock method. As a result, the process of adding a fingerprint may seem to take a long time.
Keep your finger firmly pressed as shown on the display and allow time for the sensor to register a fingerprint image. When a fingerprint image has been registered, the on-screen instructions will prompt you to move your finger for the next image. Simply follow these instructions until the process is complete.