Country code dropdown, in form, phone number block?

Hello World!

I have a form with phone number field,  is there a way to add a dropdown menu for country code? please see the attachment. 

Thank you in advance! 

1 hour ago, Elisaa-mak said:

Hello World!

 

 

I have a form with phone number field,  is there a way to add a dropdown menu for country code? please see the attachment. 

Thank you in advance! 

We can also add flag on this field.

You 'll need to add some javascript code to implement this feature which is only available on Business Plan or above. What is your current plan?