OPPO Find X9 Ultra – Fix Fingerprint Sensor Not Working

If your OPPO Find X9 Ultra fingerprint sensor stopped working, this video shows simple steps to get it working again. We explain the most common cause (third‑party screen protectors blocking the ultrasound reader), how to remove and re-add your fingerprint, how to clean the display before scanning, and why installing software updates and restarting the phone can help. Follow these steps for a reliable fingerprint unlock on your OPPO Find X9 Ultra and learn when to replace the screen protector with an original one for ultrasound compatibility. How to fix fingerprint sensor not working on OPPO Find X9 Ultra? How to register a new fingerprint on OPPO Find X9 Ultra? How to check for and install software updates on OPPO Find X9 Ultra? 0:00 Introduction – problem overview 0:09 Most common cause: third‑party screen protectors and ultrasound reader 0:24 Why ultrasound fingerprint needs original screen protectors 0:48 Delete the old fingerprint in Security & Privacy 1:12 Clean the front display (microfiber, cotton T‑shirt, paper towel) 1:31 Add a new fingerprint and roll your fingertip fully 1:52 Cancel face recognition edit (optional) 2:03 Check System → Software Update and install updates 2:36 Restart the phone, enter password once, then test the fingerprint 2:51 Result and wrap up #OPPOFindX9Ultra #FingerprintFix #UltrasoundFingerprint #OPPO Find out more: https://www.hardreset.info/devices/oppo/oppo-find-x9-ultra/fingerprint-sensor-not-working-fix/ Follow us on Instagram ► https://www.instagram.com/hardreset.info Like us on Facebook ► https://www.facebook.com/hardresetinfo/ Tweet us on Twitter ► https://twitter.com/HardResetI Support us on TikTok ► https://www.tiktok.com/@hardreset.info Use Reset Guides for many popular Apps ► https://www.hardreset.info/apps/apps/