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Sony Ericsson Unlocking Instructions

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Sony Ericsson Mobile Unlocking Instructions

If your phone has a "JOGDIAL" (for example Sony Ericsson K700i), then you must press the "down arrow" instead of the "left arrow" for step 3 & 5. By "Down Arrow" I mean directing the Jogdial down.


1. For the unlocking of a locked Sony Ericsson no Sim card 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 one of the following messages listed on devices display: “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 and press OK.

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

13. The handset is successfully unlocked.