问题
I have checkout page in woocommerce at the following link: https://combosports.com/checkout/
Now the problem is I want the phone field to be marked as required as other fields. How can I make this phone field mandatory. I have tried through the theme options but it does not work through it. I also want the optional text removed from the field and add asterisk mark on it. Please tell me how can I do that. Thank you in advance.
This is the pic of phone field I have marked as required in theme options but it does not work
Full page pic
来源：https://stackoverflow.com/questions/57002539/how-to-change-the-phone-field-in-checkout-page-as-mandatory