Will the device auto-identify the phone number from push notification and make it clickable (i.e. make a call by clicking directly on the number)?
In terms of phone numbers, on iOS the push text is standardized, so all pushes display the same without allowing for certain text to be highlighted and clickable (Android does allow for inline formatting).
That said, you can use the URL feature to make calls as well - instead of using “http”, if you use “tel://“, you can have the user make a call from the device.
For example, if I send a push with tel://2028096707 as the link:
When the user taps on the received push, it will ask if they would like to call that number: