Unlock Instructions

I have an unlock code for my Sony Ericsson Z520a. I am looking for the
instructions to unlock the phone. Anyone have this?

TIA

Suresh C wrote:
> I have an unlock code for my Sony Ericsson Z520a. I am looking for the
> instructions to unlock the phone. Anyone have this?

Here's my copy of the instructions from my provider. I assume you have
your unlock code from your provider:

"Before starting the process we have to give you warning. You have 5
tries, for the life of the phone, to enter this code. If you go beyond
the 5 tries your phone will be permanently locked to Cingular network.

If you get code error twice I do suggest you call us before going any
further. From within the US 1-800-331-0500 outside the US call
1-916-843-4685.

1. For the unlocking of a locked Sony Ericsson, no Simcard is required.

2. Turn on the handset. Display will indicate “Insert SIM.

3. Press the left Arrow (<) button.

4. Press the star (*) button twice.

5. Press the left Arrow (<) button again.

6. You will briefly see the message “Personalized with MNC2” or
“Personalized with MNC3”.

7. Wait approximately three seconds.

8. The display will indicate “Network” and a picture of a closed lock.

9. Press Select.

10. The display will indicate “Unlock (Net)5” and “NCK:”.

11. Enter the 16 digit NLCK4U code <YOUR UNCOCK CODE HERE> and press okay.

12. The handset will display “Network unlocked” and the display “Insert
SIM” appears.

13. The handset is successfully unlocked.