How do you find your phone number for iPad Air so other people can put it in their contacts and would not say invalid
Want to give family and friends my contact but I don't know what my phone number is
iPad Air Wi-Fi + Cellular, iOS 9.3.5
An iPad has a phone number for cellular service provider’s billing purposes only. It cannot be used as a contact number for your iPad.
If you have an iPhone as well as an iPad, you can link the iPad to the iPhone‘s telephone number - Add or remove your phone number in Messages or FaceTime - Apple Support
But without an iPhone, an iPad can only be contacted using an email address. It has no cellular telephone capabilities at all, including SMS texts since even those require a cellular telephone voice connection.