U NEED TO GO TO UR SERVICE PROVIEDER TO GET IT UNLOCK
SOURCE: Unlock code
To accomplish the unlocking of your Samsung R210 Spex due to forgotten or unknown user lock code I used the following method. First, you will need a data cable. I bought this one from eBay...
Data cable
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=260427509638
Create a folder on your desktop. I named mine Samsung R210.
When you plug your phone into the PC it may be recognized and work. If not you may need the USB drivers also.
Unplug the phone.
Open the Samsung R210 folder and create another folder. I called mine USB driver. Download this driver to the USB driver folder...
http://forums.mobiledia.com/cgi-bin/redirect.cgi?http://members.chello.nl/dondiegox/Samsung/Flashers/Z100_Downloader.zip
In the zip file there's a folder called Samsung_USB_install
Unzip it into the USB driver folder also and click on setup.
Reconnect the phone.
Check the control panel under USB and ports COM and LPT. My phone appeared on COM 10 under ports COM and LPT.
Next, create two more folders inside the Samsung R210 folder. I called them PST and Cricket DLL. Download Samsung PST lite and DLL installer files from the following two links into their respective folders.
Samsung PST lite...
http://www.mobile-files.com/forum/attachment.php?attachmentid=2274&d=1105395154
Cricket DLL file for the PST...
http://www.megaupload.com/?d=N3XTCO3W
Unzip them both into their same folders.
Run the install for PST.
Run the install for the Cricket DLL.
There should now be a shortcut on your desktop named Samsung PST lite. Double click it and you should see the PST Lite window.
Double click SCH-R210 on the right.
This should show you the unlock code in the next window. 
If you don't see the info click the read general information button at the bottom. Write down the user lock code or be sure to remember it. Close the windows. Disconnect the phone. Enter the lock code into the phone and you should be free!
PS, I got my R210 Spex off eBay for $0.01 because it couldn't be unlocked! I have a feeling those prices will go up now that this info is on the web.
SOURCE: i need unlock network pin for SAMSUNG SCH-i770, it
You can unlock it by flashing your mobile if your mobile is a CDMA mobile...
The procedure for flashing your mobile is in the link below
http://hubpages.com/hub/How-to-Flash-your-cell-phone
It has an video explanation.
If your mobile is not an CDMA mobile , you can get the network unlock code(NUC) by just contacting the current network provider customer care department.It is free of cost.
The restriction code can be got from your old service provider..This restriction code is kept to prevent someone who has stolen the mobile from using it with another provider...
They will have a security check done with your date of birth etc..to verify whether you are the owner of the phone..
After that they will provide you the restriction code to unlock it and use it with another service provider..
It is all free of cost do not pay anyone for this seeing some advertisement over internet . That is all fake ads.
For any quires write back to me .If yo are satisfied with my answer please vote for me(with atleast 3ups) . thanks in advance
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