Can I change the Customer Fax Number

[gardengate]

We will benefit more from a field of Customer Mobile rather than Fax number Can I change the fax to be mobile number (Or add a mobile) in both billing and shipping addresses?

[johnny43]

Change fax number in your defines to mobile much simpler that adding a field.(use the admin/tools/developer tool kit and do a search for Fax Number)

[Kim]

You can change the title from FAX to mobile using the language definition.

https://www.zen-cart.com/tutorials/index.php?article=38

[gardengate]

I used developer tool and it only found one file with the word fax in includes/languages/english/create_account.php I tried manually and found it in many files but not sure which one I should change ?