If your OnePlus 9/9R/9 Pro’s fingerprint scanner isn’t working or isn’t detecting your prints, there are a few simple steps you can take to get it back up and running. ..

I don’t really like in-display fingerprint scanners because they are slow and unreliable. But that doesn’t mean they are a downgrade from a physical fingerprint reader.

  1. The scanner may have been damaged in some way.
  2. The scanner may not be working properly because of a software issue.
  3. The scanner may not be calibrated properly and is not reading your fingerprints correctly.
  4. You may have had a recent infection that caused the scanner to malfunction or stop working properly.

You are using the wrong finger. Your fingers are dirty, cut, or wrinkled. Your fingers are wetSome software issueIssues with the sensor.

Fix if Fingerprint Scanner Not Working or Not Detecting on OnePlus 9/9R/9 Pro

By Cleaning Your Screen

The OnePlus 9/9R/9 Pro has an in-display fingerprint sensor that takes photos of your fingerprint. If the screen is dirty, it will be hard for it to detect your fingerprint. To fix the fingerprint scanner not working or not detecting on the OnePlus 9/9R/9 Pro, you should clean your screen with a soft cloth and use an alcohol-based cleaner to wipe off any dirt.

Replace Your Screen Protector

A lot of users apply screen protectors on their smartphones and it is good for the protection of the screen. But what generally happens is that the screen protector collects a lot of scratches over time. These can create a problem and a lot of screen protectors also hinder the screen sensitivity causing the issue. So try replacing your screen protector and use a good quality one.

Add New Fingerprints and Remove The Older Ones

To fix the fingerprint scanner not working or not detecting on the OnePlus 9/9R/9 Pro, you should add your new fingerprints and remove the older ones occasionally. Cleaning your fingers and device’s display properly before doing so is also recommended. ..

  1. Take a piece of paper and draw a rough outline of your hand.
  2. Trace the outline with your fingers.
  3. Cut out the tracing with a sharp knife or scissors.
  4. Rub the cutout area with soap and water to remove any built-up oils or sweat from your skin.
  5. Dry off completely and apply a new fingerprint card to your hand

Settings.Navigate to Security and lock screen.Now tap on Fingerprint Unlock.You will have to type in PIN, Password, or Pattern if prompted.Now you will see the delete icon right across the fingerprint(s) you have registered, tap on it.Select Yes and Remove to confirm.

  1. Take a picture of your fingerprint
  2. Scan the photo with your fingerprint scanner
  3. Add the fingerprint to your account ..

Settings > Security & lock screen > Fingerprint unlock Tap on Fingerprint Unlock. You will be prompted to enter a PIN, Password, or Pattern. If prompted, tap on Add Fingerprint. You will be prompted to enter a PIN, Password, or Pattern. Tap on Done. ..

Check for Hardware Problem and Then Proceed

  1. Open the OnePlus app and sign in with your OnePlus account.
  2. Tap on the three lines in the top left corner of the main screen.
  3. Choose “fingerprint test.”
  4. The fingerprint test will start automatically and take a few minutes to complete.
  5. If it’s successful, you’ll see a message in the bottom right corner of the main screen reading “Your OnePlus 9/9R/9 Pro is infected with a hardware issue.”

To do a fingerprint auto-test, dial *#808# and go to the fingerprint test page.

  1. Open the Settings app and navigate to the Security section.
  2. Scroll down and tap on the three lines that say “Boot into safe mode.”
  3. Tap on the blue button to enter into safe mode.

To boot your OnePlus 9/9R/9 Pro in safe mode, press and hold the power button until the device powers off. Then, hold ‘Power off’ on your screen to see the option to boot your device in safe mode. Tap OK to reboot into Safe mode. ..

If your fingerprint sensor is not working properly, see all the apps that ask for fingerprint permissions and uninstall them.

By Clearing Cache from Recovery Mode

  1. Boot into Recovery Mode by pressing and holding the power button and then pressing and holding the reset button.
  2. Type “cmd” into the command prompt and press enter.
  3. Type “recovery” into the command prompt and press enter.
  4. The recovery screen will appear, where you can choose to clear cache or data from memory. If you choose to clear cache, your computer will start up slower and may not be able to start up at all if there is a lot of cached data on your hard drive. If you choose to clear data from memory, your computer will start up faster but may not be able to start up at all if there is a lot of data in your RAM.

To switch off your OnePlus 9/9R/9 Pro, first press and hold the Power button and the Volume Down button at the same time. You’ll see the recovery mode options on your device. When you see the recovery options, take your hands off the two buttons. Now you’ll see the Recovery menu. To go to ‘Wipe Cache Partition’, press the Power button and then confirm with Volume down. To return to the main Recovery menu, press both buttons at once again. ..

Now let the process complete and once it is done, you can turn on the device by pressing the Power button. ..

By Resetting Your Phone

  1. Open the Settings app and scroll down to the bottom to find the Data Usage section.
  2. Toggle off your phone’s data usage by hitting the three lines in that section and then tap on Reset Data.
  3. Type in your passcode and hit Reset Data again.
  4. Your phone will now be reset and will be able to use its new settings.

Settings > System > Reset options > Erase all data.

Conclusion

OnePlus has released a software update that should fix the fingerprint scanner not working or not detecting on the OnePlus 9/9R/9 Pro. If none of the methods mentioned above work out for you, you can just visit any nearby OnePlus Support Center and they will help you out with the issue. ..