If you want to transfer your personal mobile number to AU, you must follow these 2 steps:
Please note the following:
If you leave AU, and want to keep your mobile phone number, you must contact the telecom provider, you want to use, and follow their instructions for transfers of mobile numbers. You can often find information about this in the telecom provider's website. When you contact the telecom provider you wish to use, you must state that AU is the legal owner.