Understanding Your Plan & Critical Information Summaries
If you're looking for detailed information about your existing plan, all you need to do is check out its Critical Information Summary (CIS).
Simply find your Plan ID number in the 'Your Service' section of your Optus Bill. Once you have your Plan ID, search for the Critical Information Summary using the Plan ID number.
If you can't find your Plan ID, have a look through our complete list of Critical Information Summaries (CIS) instead: