samsung c3312 best unlock solution.
 

insert sim card,press sos call,press lock key,dial *2767*3855# and password will be reset.100% ok solution

tested by me tanks for info sir.................

yes it's Work
Many Many Thanks
You Have C3312 USB Modem Driver Please Upload Here
Thanks

use samsung driver pack ver. 1.3 (file size 42.4mb.). or install samsung KIEs (size 133mb).

One thing, to install kies you must install microsoft net framework 3.5 or 4.0 in your pc.

Here is link for kies excluding netframework, file size 64.8mb.
http://www.filehorse.com/download-samsung-kies/12415/

many many thanks .This is very useful

any bady give tool c3312 phone unlock

Install kies...
I flashed it with official tool and got simlock.. After that z3x was giving error of msl deactivate fail ...
So Solution is

1-Flash any firmware with z3x.. (You must do it for unlocking)
2-Press unlock button and done.....

By the way there are 2 boot keys you can use any

Volume down.. or .. Center button key

thanks bro help a lot for me