My face time is not working what could be the reason

Probably you are saying FaceTime is not working using your Phone number.

To activate iMessage and FaceTime using your Phone number

First, check to know whether you have an SMS plan enabled at least for One SMS with your carrier. Contact your Carrier (Cellular Service Provider) the agency that issued the SIM to you

If your iPhone is used with a carrier not found in the wireless carrier articles, make sure you can send and receive international SMS. (One SMS Only)

If you can't turn on or sign in to iMessage or FaceTime - Apple ...

shoe192 Said:

"My face time is not working what could be the reason: Face time is not working how do I resolve this?"

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A Few Sites to Try:

• If Face ID isn't Working on your iPhone or iPad Pro - Apple Support

• If you can't Make a FaceTime Call on your iPhone, iPad, or iPod touch - Apple Support

• If an Alert Says Face ID has been Disabled on your iPhone or iPad Pro - Apple Support

• If you Experience an Error when Trying to Activate iMessage or FaceTime - Apple Support