Where is the Face ID sensor iPhone X?
Face ID uses a "TrueDepth camera system", which consists of sensors, cameras, and a dot projector at the top of the iPhone display in the notch to create a detailed 3D map of your face.
How much does it cost to replace the Face ID sensor on iPhone X?
Apple iPhone X Face ID cost is Rs. 3499 with 6 months warranty.
How do I fix my Face ID sensor?
If Face ID isn't working on your iPhone or iPad Pro
Can Face ID sensor be replaced?
If damaged, Face ID can only be repaired by Apple, so work with care. Peel and separate the pull tab on the final adhesive strip, on the top edge of the upper battery cell.