Article ID : SX919802 / Last Modified : 07/02/2020

Fingerprint sensor sometimes doesn’t work properly

    IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.

    Topics covered in this article

    • Why doesn't the fingerprint sensor work as expected? 
    • The phone doesn't recognize my fingerprint, what can I do?
    • The fingerprint sensor doesn't work properly, can it be fixed?

    Valid for

    • Xperia® 1
    • Xperia 1 II

    Solution

    You may experience that the fingerprint sensor on your Xperia® 1 doesn't respond in a satisfactory way. In this case, try to register your fingerprint again. Touch the sensor with your finger at the same area where you unlock the screen and be sure to use the same grip you normally would. You should not move your finger widely, regardless of the animation UI on the screen.
    Tip: For Xperia 1 users, in the software version 55.1.A.9.21, released in June or July 2020, there were implemented some improvements for the fingerprint sensor recognition. Please update the software in your Xperia 1 to version 55.1.A.9.21 or higher and then re-register your fingerprints again.

    To register your fingerprint again

    1. Clean the fingerprint sensor gently with a clean and dry cloth.
    2. Tap SettingsSecurityFingerprint Manager.
    3. Re-enter your PIN or password.
    4. Delete all registered fingerprints.
    5. Tap Add fingerprint and register your fingerprint.

      diagram of Good fingerprint registration showing the areas close together on the sensor where you can register fingerprint by each touchdiagram of Bad fingerprint registration showing spaces between each touch on the sensor

    You can register up to five fingerprints. If the issue still occurs, try to add the same finger to Finger 2, 3, 4, or 5, but tap in a slightly different location on the sensor.

    1. Tap Add fingerprint, register the same finger to Finger 2, 3, 4, or 5.
    2. Shift the location of your finger taps slightly from the registered position as seen below:

      side by side illustration of first fingerprint registration with the tap pattern in the middle of the sensor and the additional registration with the tap pattern near the right side

      Note: You can also try rotating your finger 90°, and then register it.

      side by side illustration of first fingerprint registration with a vertical fingerprint and tap pattern in the middle of the sensor and the additional registration with with a horizontal fingerprint and the tap pattern in the middle