What's the best way to highlight a telephone number in an Android App?

[Question about android style]

I was wondering what is a good way to make clear that you can click on a telephone number and immediately call someone without copying & pasting the phone number. How can I persuade a user to click on a phone number ?

ps: my question is not about how to call someone when clicking on a phone number, but about how to style the phone number to show that it is clickable.