How do I unlock my Telstra Pre-Paid Mobile for use on other networks?

Telstra Pre-Paid Mobiles (including iPhones) are locked for use only on Telstra's network.
 
To unlock your mobile for use on other networks, you may need to pay an unlocking fee of $50, $100 or $150 (depending on the phone's model).
 
To unlock your Pre-Paid Mobile, or check your unlocking fee, follow the steps below:
 
Step 1: Press * # 0 6 # on your mobile, and write down the code that's shown. This is your phone's IMEI number.
 
Step 2: Contact the Telstra Pre-Paid Unlocking Centre direct on 1300 720 179, or call 125 8880 and follow the prompts.
 

If you're calling from overseas, call +61 439 125 888 (international call charges will apply).

You can pay by Credit or Debit Card, or using your Pre-Paid main account balance (not including bonus credit).

If you don't have a Credit or Debit Card or don't wish to pay using your account balance, please visit your nearest Telstra Store to unlock your mobile.
 
Step 3: You'll be asked for your phone's IMEI code and will then be advised of the unlock fee and payment instructions.
 
Step 4: Once payment is completed you will be advised of unlocking instructions.

For Pre-Paid iPhone customers
For Post Paid iPhone customers