What is the code

You can get the Special Code for your T-Mobile Sidekick SLIDE at low cost from the site Wickedunlock.com here you also need to specify the IMEI number of your phone.Then they deliver the code to you through mail.Using that code you can unlock your phone easily.After unlocking it,you can use freely any GSM Network SIM card on your phone.This is the easy and permanent unlocking method.

i think your phone is asking for unlocking code. you can get the special code for your sidekick slide from Classicunlocking.com

i think your phone is asking for unlocking code. you can get the special code for your sidekick slide from Classicunlocking.com

try this site to get the special code for your phone. Unlocking4U.com

haw to open aplecetion

special code for sidekick lx

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.

lkl

Check this thread out for your answer:


http://www.fixya.com/support/t266497-sidekick_3_unlock_code_or_unlock

1.your sim needs a password 
2.turn off ur sidekick 3 
3.place ur cingular card in 
4.turn on sidekick 3
5.itz gunna ask you for a special code ignore it
6. go to settings den sim center 
7. if ur sim lock is disabled jus enable it 
8.den change ur sin pin to wateva you want
9.once u change it you will signals bars go up
10.go 2 settings network options 
11. press scan scan select manually 
12. select ur network 
13. and datz it your sim iz workin on sidekick 3

if u turn it off u will have 2 do da same process again
this will work with all sidekicks