Unlocking Instructions for LG CU405

General Information about your LG CU405 unlock code

When you receive your email with your unique LG CU405 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 CU405

To unlock your LG CU405, 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:

357923175257330 76993175 55715751 28849590 86396023 96649237
357923129829930 1234503940715843 1234580756842540 1234541787162818 1234549458848185 1234549453599074 123454915043587

Or

77187160 59120981 33117592 25642216 36346659 23408743
7644193494329478 2182142176508288 8913849843021867 7690121032489683 7690121041516860 769012126873459

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