If the Xperia's Fingerprint function does not work properly

Information/ Solution

Update your device’s software, and then re-register your fingerprint.

Perform the following operations and check if the problem is resolved.

Details 

• Restart your device.
• Force your device to restart.

• Fingerprint authentication works based on fingerprint feature-point information. Therefore, fingerprint authentication may not be possible when the fingerprint doesn't have sufficient feature points.

• Authentication performance (authenticating a fingerprint when the fingerprint sensor is touched correctly) depends on the condition of the fingerprint. If your fingerprint is in any of the following conditions, registration, and recognition of the fingerprint may be impossible due to deteriorated authentication performance. To improve the performance, try wiping or washing your hands clean, authenticating with a different finger, etc.

  • Wrinkled or wet after taking a bath, etc.
  • Covered with a large amount of sweat or grease, such as hand cream
  • Dirty with mud or oil
  • Rough or injured (cut, inflamed, etc.)
  • Extremely dry
  • Changed in the pattern due to weight loss or gain
  • Scraped and faded
  • Extremely different at the time of registration and authentication

• Notes on the use of the fingerprint sensor

  • Don't hit the fingerprint sensor or apply strong impacts to it. Also, don't scratch or poke the surface with a sharp object. Doing so may cause a malfunction or damage.
  • Don't attach stickers to the fingerprint sensor or smear it with ink, etc.
  • If the fingerprint sensor gets dirty, fingerprint registration and recognition may become impossible due to deteriorated authentication performance. Occasionally clean the surface of the fingerprint sensor with a soft, dry cloth. (Please do not wipe with anything containing water, alcohol, disinfectant, etc.)

If the Fingerprint Sensor still does not work, follow these steps:

• Use the Tests feature to perform a Fingerprint Sensor test.
• Use the Xperia Companion software to perform software repair.