There have been issues with manufacturing yield for the iPhone X's Face ID sensors, report industry insiders.This means there may be even fewer iPhone Xs to go around on November 3 than expected, due to additional manufacturing issues as reported by The Wall Street Journal.According to the report, the new facial recognition sensor on the iPhone X is divided into two halves: a “Romeo” module that projects the infrared dots to map faces, and a “Juliet” module that reads the pattern.A source for the WSJ claims that there have been issues with manufacturing yields for the Romeo modules, which apparently took more time to assemble than the Juliet parts. This created a bottleneck that could further limit supply when the phone launches next month.According to the Journal, Romeo and Juliet are two separate components that are integral to Face ID's functionality. The Romeo module beams a laser at a person's face to identify facial features, contours, and more. The Juliet module takes that information and interprets it to ensure the person trying to activate the iPhone X is verified to do so. Without either component, the iPhone X's central security feature will not work.The Journal's sources say Apple's manufacturing partners have had trouble assembling all of the components in Romeo, leaving too few completed parts to match up with the Juliet module.