The iPhone 6s does not have Face ID.

To enable Face ID on your iPhone 6s Plus, you’ll need to update to iOS 13. Once you’ve updated, open the Settings app and tap “Face ID & Passcode.” Tap “Enroll Face” and follow the on-screen instructions.

There could be several reasons why your iPhone is showing that Face ID is not available. One possibility is that you may have turned off Face ID in your settings. Another reason could be that your phone may not be able to detect your face correctly due to poor lighting or other factors. If you are having trouble with Face ID, you can try resetting the settings on your phone.

The iPhone X, iPhone XS, and iPhone XR all use Face ID.

The iPhone 6s has a fingerprint sensor.

Yes, Face ID will work with eyes closed. However, if your eyes are closed too tightly, Face ID may not be able to read your face.

Yes, an iPhone can have two Face IDs. To set up a second Face ID, you’ll need to create a new user in Settings and enable Face ID for that user.

Yes, you can have two face IDS. However, if you have two face IDS, one will be the primary and the other will be the secondary. The primary face ID is the one that is used to unlock your device and authorize purchases. The secondary face ID is used for backup in case the primary face ID is not recognized.