Number Share is an included option on your plan. You will need an eligible Optus Postpaid Consumer or SMB plan to use Number Share. Once you redeem your Apple Watch, you will need to activate Number Share using the watch app. Once activated, you will receive cellular connectivity for use with an eligible Optus Postpaid mobile service.
If you are not currently an Optus Postpaid mobile customer, you may need to establish a number sharing service with your existing telco provider. Your existing telco provider may charge you a monthly fee. You will need to contact your telco provider directly for specific charges.
Please note that if you do not have an additional eligible Optus Postpaid mobile service with Number Share activated (or if you so choose) your SIM can be used in a separate SIM enabled device and the 500MB monthly data to share can be used on that device.