The easiest way of establishing the number of free units not only at your number is going through the My Vodafone Self Care in the section Usage. To log in to My Vodafone you need an email and password.
You can establish the number of free units with a free SMS sent to 7700. The balance always refers to the phone number from which the text message is sent.
Dial *77 from your telephone. From the menu, select the option Your Account, followed by Expenses under Control and Smart Overview.
With our service Display Messages, you will get an idea about the usage of bundles and services at your phone number right in your telephone.