If I tap on the (i) for numbers in the call history then some have Share Contact displayed as an option but others do not. None of the numbers are in the address book so why should there be any difference in the options available when the different numbers are selected?
For example here are two numbers in the call history:
The -0280 number has Share Contact and Share Location as an option, but -5420 does not. Instead it has Ignore Contact as an option which the previous number does not. Why is there a difference?