The fingerprint sensor issue on the Galaxy S8 and S8 Plus was immediately fixed by Samsung on the Galaxy S9 and S9+. The Reddit and XDA Developers are reporting that the fingerprint sensor on their phones stop responding from time to time. The only trustworthy fix to the problem is to be a reboot of the devices. This matter was investigated and temporary fix involves disabling fingerprint sensor gestures (accessible in the Settings » Advanced features menu), which let you swipe down on the sensor to access the notification shade and swipe up to open Samsung Pay.
Reboot Takes Time Though
The solution is ideal but given the frequency at which the fingerprint sensor stops responding, might be the only one we have at the moment. It will be perfect if it’s just a minor flaw that can be fixed with an OTA update. A hardware problem could spell trouble for Samsung’s latest flagship and will very likely trigger a mass recall of the affected devices. In the meanwhile, do let us know in the comments below if the fingerprint sensor on your Galaxy S9, S9+ is working as expected.