Already an Optus customer? Save $15/mth for 6 months on each eligible plan you add to your existing service. Save on a new mobile, internet or tablet plan - they are simply better together. The more you add, the more you save. Ends 06/04/25. Eligible plans required (excl. Prepaid & Watch plans). Mobile and Data plan discount applies to secondary service only. Plans revert to standard price after 6 mths. New services only on the same account. Max 5 per product. T&Cs and eligibility criteria apply