What is samsung duos backup pincode?

thanks man 1234 worked. you are really a genius 

Thanks a lot 12345 worked i think its default. 

Thank you. 0000 worked. I think it's d default one for all duos handsets. 

Thanks a lot, For me 12345 is worked (Samsung Galaxy Core - GT-I8262) Ramesh 

thank you so much 1234 worked for me.............. 

Thanks a lotttt worked . . 12345 worked successfully. Thank you Thank you vryyy djd 

thanks 12345 worked for me after reading this. I guess I used this before unsuccesfuly.  

I can access this code 12345 thanks for this information..  

The backup PIN code was set by you. The default one is 1234, 0000, or 12345. If none of these work, then you can't look it up anywhere else.