It says just Network lock only,You need to enter the Code if it locked Network mean.You can get the Unlock code at here http://www.superunlockcodes.com/sidekick-lx-2009/rs12wp9/
and Unlock it,get the Unlocking Instructions below to unlock it step by step.
Sidekick LX 2009 Unlocking InstructionsWarning :
Do not enter any wrong unlock codes on your Sidekick LX 2009 mobile
phones. If you enter over a certain amount of wrong unlock codes on your
Sidekick LX 2009 mobile phone, your phone may get hard locked and
sometimes become unusable.
1. Switch ON your Sidekick LX 2009 with a Not ACCEPTED
2. If your Sidekick LX 2009 asks for a PIN code, then enter your SIM card PIN and press OK.
3. Sidekick LX 2009 will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your Sidekick LX 2009 is now unlocked.
: We mean, to use a Sim card from a network other than the network your Sidekick LX 2009 is locked to.
Sidekick LX 2009 mobile phone has an unique unlock code. You can buy
the unique unlock code for your Sidekick LX 2009 mobile phone using the