If there are some here that can say for sure that their FPS worked perfectly before the WSD and then did not work well after, please note that. I talked to someone who said they had a problem with the sensor after the WSD install and asked them that. They said they installed the WSD as soon as they got the phone so could not be sure. They thought the FPS worked fine for the couple of hours before the WSD was installed but that is not certain. If there are many here that can say they used the FPS for days or weeks before the WSD and it was perfect and then they installed the WSD and the FPS no longer worked, that would be good information.