Can Face ID be enabled without passcode

MRaslan wrote:

but last night I did the same thing and in the morning I found the Face ID enabled!!

After pressing X it will always need the Passcode.

Change the Passcode if you think someone knows your Passcode.

SravanKrA wrote:

Simply pressing X will never disable Face ID.

Yes it does.. The message presented when you do what the OP describes is 'Your passcode is required to enable Face ID'. The opposite of enable is disable right? So Face ID is effectively disabled until the passcode is entered.

When you press X then you will need the passcode next time to open the iPhone because

Your device will require your passcode when you do the following:

Turn on or restart your device or • Press X after Slide to Power Off Screen has reached.

Press the Home button or swipe up to unlock your device (you can change this• )

• Update your software

• Erase your device

• View or change passcode settings

• Install iOS or iPadOS Configuration profiles

The OP knows this and intentionally goes to the power off screen before going to bed. Therefore the OP expects to be prompted for the passcode in the morning.. And because they were not prompted, they suspect that someone else accessed the phone while they were sleeping.

So one of the following must be true:

1. Op forgot to 'disable' Face ID prior to going to sleep.
2. Op woke up at some point and entered the passcode, but doesn't remember doing it.
3. Someone else entered the passcode.

you made 5 response posts some of them contradicting prior posts.. and edited them a dozen times.. OP is probably even more confused now.

But I agree with your final statement, If someone knows the passcode, then OP should change their passcode.

When you press X then you will need the passcode next time to open the iPhone because

Your device will require your passcode when you do the following:

• Turn on or restart your device or Press X after Slide to Power Off Screen has reached.
• Press the Home button or swipe up to unlock your device (you can change this)
• Update your software
• Erase your device
• View or change passcode settings
• Install iOS or iPadOS Configuration profiles

Some

MRaslan wrote:

does this mean that someone knew my passcode and have already opened the phone so the Face ID get enabled?

No one else other than you can enable your Face ID.

MRaslan wrote:

And give this message (your passcode is required to enable Face ID)

It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images/pictures speak louder than words. 

Please understand this is a public forum: While attaching a Screenshot, do not provide any personal credentials, such as Card detail, email id, apple id, IMEI number, Serial Number, Phone number, Order ID, if you are sharing a map ensure your location is not identifiable, etc.

MRaslan wrote:

And give this message (your passcode is required to enable Face ID)

What it means is that you need to enter the Passcode to open the iPhone and enable the Face ID now. Next time the iPhone will open with FaceID.

See the PIC below