Unlocking Instructions for LG CU400

General Information about your LG CU400 unlock code

When you receive your email with your unique LG CU400 unlocking codes, you may see there's actually more than one code as some models require more than one code to unlock them fully. However, for simplicity, we do aim to send you a single unlock code.

Depending on your model, the code you receive will either be an 8 digit or 16 digit number.
(Please see below for some examples)

Unlock Model: LG CU400

To unlock your LG CU400, firstly you will need access to a hidden menu.

1. Insert a SIM Card not from the original network, IE It's not locked to
2. Turn on the phone
3. The phone will display 'Invalid SmartChip'
4. In Idle screen, enter 1 5 9 7 5 3 # * #
5. The phone will now display 'Enter NCK, Remaining 5' (Note: there's a limted number of attempts)
6. Enter the unlock code
7. Select 'Ok' to unlock the phone

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Quick Glossary

NCK = Network lock
SPCK = Service provider corporate lock
SPK = Service provider lock

Some examples of the unlock code(s) we provide:

357923159826246 48436421 92588145 54585163 78053741 93742830
357923197287409 1234503985491814 1234580734802584 1234541726454667 1234549461092472 1234549441125829 123454957346511

Or

59269792 95835913 65956316 78985302 16161968 39876845
7644193423071411 2182142131675671 8913849849791984 7690121028904476 7690121078972661 769012136408321

We may also return your IMEI number, simply ignore this, it's always the first one.

In most cases, the only one you will need is the Network lock (or NCK) which is the 1st code, as highlighted in bold above.

But should you need it, the Service provider Corporate (or SPK) unlock code is the last one.

In the unlikely event you are sent an 8 digit code and your phone only accepts a 16 digit code, try putting zeros in front of code. But only try this the once and contact us.

Notes on hidden menu access codes:

To enter your unlock code, LG phones often require access to a hidden menu first. Most newer phones will accept the code 2 9 4 5 # * 7 1 0 0 1 #. So if the recommended code suggested doesn't work, please try this one, if this also doesnt work please contact us