Face ID Sensor Replacement Cost

Hello Navtej_Singh103,

Thanks for participating in Apple Support Communities!

We understand that you enjoy the convenience of the Face ID feature on your iPhone X, and you've tried to set it up again after the iPhone came in contact with liquid, but an alert appears on the display.

We'll be glad to share some options so you can determine the best path to get this resolved:

• Our service team will be glad to inspect your device, and answer any questions you may have regarding repair prices.
• You may check for service locations near you using the Apple Support app or by clicking here: Product Service and Repair Information.
• Be sure to complete these steps prior to your visit to Get your iPhone, iPad, or iPod touch ready for service.
• If you plan to visit an Apple Store, kindly read this letter To our customers to prepare for your visit.
• If you're visiting another service location, we suggest calling in advance to learn if they have special procedures in place.

Depending upon the error or alert message you see when you try to set up Face ID, we recommend the following steps:

• If an alert says Face ID has been disabled on your iPhone or iPad Pro. 
• If you see the message 'Face ID is not available', then we suggest restarting the device, updating (or reverting from Beta) to the latest iOS version, and if the issue persists, follow the steps above to have your device inspected.

We trust these steps and tips serve you well, and you're able to enjoy Face ID, and all of the features on your iPhone X again very soon.

All the best!