Q: what if this didnt work? my phone is telstra i am trying to unlock it so i can use dodo as  carrier

nopes. only the carrier can. keep pestering them.

Read http://crowdsupport.telstra.com.au/t5/Apple-iPhone-KB/Unlock-your-Apple-iPhone-f rom-Telstra-Post-Paid-Customers/ta-p/65930

make sure you also read the link Unlock your phone online near the top of the page in the link above.

This is the link https://unlock.telstra.com.au/iphoneunlock/main;jsessionid=B97FE52E9C21FAC34DD72 DE3DE78EC2C?execution=e1s1

Message was edited by: Ocean20

And why would you want to use DODO?  WHy not amaysim... they have a $39.95 unlimited call unlimited text 4GB plan and use Optus network.  You could try Aldi they have something similar costs $35 and uses Telstra network

I noticed DODO use the optus network so I guess that isn''t too bad.  My guess you wont get 4G though.

Did you go to this link https://unlock.telstra.com.au/iphoneunlock/main;jsessionid=B97FE52E9C21FAC34DD72 DE3DE78EC2C?execution=e1s1

In the first link I gave you it did say

"Post-Paid iPhone: Unlock your iPhone online, then wait 72 hours and follow Apple’s instructions below. There is no fee to unlock your Post-Paid Apple iPhone from Telstra."

Has it been 72 hours?

Well I guess that there is nothing you can do except hassle Telstra.  Good Luck

One step that is often omitted from the instructions is that the iPhone needs a Device Firmware Update, otherwise known as DFU. 

!.  Connect the iPhone to any computer running a fully updated version of iTunes.

2. Press and old both "home" and "sleep/wake" buttons

3. After eight seconds let go of only the sleep/wake button.

4. Keep holding the home button until you see a popup mesage in iTunes.

5. Read all all the popups, then use iTunes to update the iPhone's software.

If the popup fails to show, repeat steps 2 through 4