...
Note: If only one or two digits are entered in the Country Code, zeros will be appended to the number when the activity is saved or completed.
Enter the Home Cell Phone Number in the text box next to the Country Code, as shown below.
...
After completing the activity, an example of the downloaded signed form with the Home Cell Phone number is shown below. If there are any preceding zeros in the Country Code, they will be replaced with a "+" sign in the printed form.
If the Home Cell Phone number is optional, entering it is optional and the required validation message will not trigger on save/activity completion.
...