Dot projector is one of the core parts in Face ID system.
iFace check the dot projector, which makes Face ID repair possibility diagnosis more quick
Step 1. Get the Face ID module dot projector flex to connect with the corresponding connectorStep 2. Power the iFace with the cableStep 3. Press the blue 'Read' buttonStep 4. According to the displayed icons to judge whether the dot projector is repairable or not