Chosen Solution
My warranty is over, one month after my true tone stopped working randomly it works but not always what could be the reason behind it ? Apple store told me i need to replace the entire screen which is ridiculous.
Your iSight camera is also the sensor for the display so make sure you haven’t blocked it. Does the iSight camera work? Don’t fret! Apple often will let you slide a month. But! You need to get your system in ASAP to Apple or one of their authorized service centers. What likely has happened is the ribbon cable which serves the iSight camera is damaged.
