We seem to be getting closer to the “holy grail” of smartphone design: a true edge-to-edge display without any notch or punch-hole. However, it looks like there are still some important hurdles to solve. Apple is one of the companies that has been trying to reach this goal. Their first step would be to effectively hide the Face ID system under the panel, leaving only the punch-hole selfie camera visible. But according to the latest reports, Apple is hitting technical issues in its quest to hide the Face ID sensor array under the iPhone 18 Pro screen. The latest leak…