This thread relates to the page for the Samsung S8000 Jet phone on the Unlockapedia.
I unlocked my Jet about a year ago with this guide I found on a forum.
1-power on without sim card
2-push your sim card ,,without removing battery
3- type : *2767*2878#
your phone should restart after 1 min ,,
5- now type : *746 56 25*638*0000 0000*0000 0000#
6- now type :#746 56 25*638*0000 0000#
your UNLOCK CODE is 0000 0000 now & all code deactivate
after doing this I got a message saying something about failing (I forgot exactly what) but that is just confirmation that the phone was now unlocked, nothing to worry about.
You should now be able to use any sim card, no fuss, no extra cost, no waiting, giffgaff included! I am living proof of this ^_^
I know this is years ago but to help anyone who might come across this post in the future:
You don't input the spaces, the poster just put them in to break up the numbers so you can read them easily. Just type the code as one sequence.
And with regard to the quetion below, it doesn't matter if the code starts to appear as ---- it will still work.