OnePlus 6T has quite a few new features over OnePlus 6. The in-display fingerprint scanner is one of the new features, which brings an intuitive unlocking experience on the phone. The new optical sensor and accompanied software on OnePlus 6T ensure faultless fingerprint unlock, but some users have problems with the in-screen fingerprint sensor.
If the new under-display fingerprint scanner on the OnePlus 6T causes trouble, users need to understand few things while registering their fingerprint with the phone as well as when unlocking the phone using the finger. Not just for OnePlus 6T, these tips apply to all phones that have an optical sensor for unlocking their phone.
Here is how to fix the screen unlock issue on OnePlus 6T. Since the in-display fingerprint scanner on the OnePlus 6T utilizes a different technology than the usual fingerprint scanner, ensure the below things when registering your fingerprint.
To fix screen unlock and in-display fingerprint scanner issue, owners of OnePlus 6T should update their phone to latest OxygenOS 9.0.5. This update includes improvements for Screen Unlock as well as general bug fixes and other improvements.
OxygenOS 9.0.5 OTA update is live now, which weighs around 94MB. If you have not received the OTA update yet, you can download the OxygenOS 9.0.5 full OTA update file [HERE], which weighs around 1.6GB and flash manually. Follow this guide to install the update manually.
If you are experiencing Screen Unlock issue on OnePlus 6T, even after updating your OnePlus 6T to OxygenOS 9.0.5, then ensure the following.
Related: How to unlock bootloader of OnePlus 6T
How to Fix Screen Unlock Issue on OnePlus 6T
1. Do not add your fingerprint in bright light. Also, add fingerprints at room temperature.
2. Enter only one fingerprint to each fingerprint profile. If fingerprints from more than one finger are entered under one profile, some areas of the finger might not be scanned, which will increase the recognition fail rate.
3. When unlocking the phone, press the fingerprint icon on the display evenly until your phone unlocks.
4. For better recognition, your fingers and display should be clean. Dirt will increase the recognition fail rate.
5. Use recognized screen protector only. In addition, you need to re-enter your fingerprint after each replacement of the screen protector.
6. If above mentioned tips should not helped, try to add your fingerprint in the dark. Because the screen unlock module is very sensitive to light, adding a fingerprint in the dark will certainly improve the way it works.
