The $59 Optus Cap Plan includes $750 of included value, making this plan ideal for medium-heavy users who make 200-300 calls, send around 100 text messages and use 2GB of data a month. Optus covers 97% of the Australian population with 3G dualband handset, and offers unlimited access to Facebook and other social networking sites. Customers may need to pay a mobile repayment on 24-month contracts where a handset is included with the plan.