I bought a sidekick lx from amazon, and it said it is unlocked for any gsm user. I am in belize, Central America and I put my sim card in and it is saying no service. what should i do.

You can unlock the Sidekick LX from Jamica Network digicel using the Unlock code ,you can get the Unlock code within 0 to 5 Hours(approx) you can get the code at reasonable cost here Simpleunlocking.com and Unlock it ,then you can use it with any GSM Network Sim card....Follow the instructions below and Unlock it step by step...

Sidekick LX Unlocking InstructionsWarning : Do not enter any wrong unlock codes on your Sidekick LX mobile phones. If you enter over a certain amount of wrong unlock codes on your Sidekick LX mobile phone, your phone may get hard locked and sometimes become unusable.
1. Switch ON your Sidekick LX with a Not ACCEPTED SIM Card.
2. If your Sidekick LX asks for a PIN code, then enter your SIM card PIN and press OK.
3. Sidekick LX will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your Sidekick LX is now unlocked.

*NOT ACCEPTED : We mean, to use a Sim card from a network other than the network your Sidekick LX is locked to.

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 SIM Card.
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.

*NOT ACCEPTED : We mean, to use a Sim card from a network other than the network your Sidekick LX 2009 is locked to.
Each 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 form above.

I hope its locked with T-mobile which is easily unlock-able with IMEI or MEP unlock code, I run a mobile shop and recently unlocked 5 of these sidekicks this month. You can get your code online, its very easy and takes couple of seconds to enter the unlock code and have your phone free from restriction. Not to mention once unlocked you can use it ATT or any other GSM network. You can get your code from here.Let me know if you need more help with this.

You Can Instantly Unlock Your Sidekick Now!!! Just Visit unlockyoursidekick.com

Your Sidekick operates on a GSM cellular network. Your Boost SIM card (and Boost Mobile phones) operate on an iDEN cellular system. You cannot use a Boost SIM card in a Sidekick. (FYI - SIM cards cannot be unlocked. Only cellphones phones can be unlocked.)

I just got a sidekick off the internet and I put my SIM card in the phone and it says no SIM card. What do I do? Anyway to fix whatever is wrong?

once it says to enter your "special code" you hit cancel and it enables the sim pin. then you go to change sim pin, put in your old sim pin and put in a new one. then go to network settings and select "scan and select manually". once you find at&t click done and you can use the sidekick.

just ask the phone company provider for your PUK2 AND PUK codes.
when you get them go to the jump menu dial
**05*PUK*passcode*passcode#
the passcode is any 4-8 digits you'd like, that are NOT, AND I REPEAT N - O - T consecutive.
(for example 2736 is good whereas 1234 or 9876 is bad)
if it asks your for the code again put in the PUK2 then go to settings> network options goto the "scan and select manually" button and chose your carrier.

works for sk 3, slide and lx.
the video says only at&t in the U.S. but... i've seen it work for fones in europe.
try it.

Insert the sim that you wan to use with your sideckik, turn on the phone an then just go to MENU>SETTINGS >SIM CENTER. there change the pin sim but store the same pin for example old pin "1234" new pin "1234" confirm new pin "1234" then go to network options and click on RESCAN AND SELECT MANUALLY when you see the name of your network select it and you are done. phone unlocked....