NOKIA PHON£ COD€§

{*****NOKIA*****}
*#7370# to format/ remov
virus *#7970# phone
reset *#7479# hard
reset *#7780# factory
reset *#74602565#
stopping sim lock

{******SAMSUNG*******}
*2767*2878# to unlock
*2767*3855# to unlock
*9998*3323 then reboot
then *01#
*2767*688,0111*code#
to unlock *9998*532#
or *9998*0532# to set
LCD constrast

{****CHINA PHONE*****} 1122 3344
1234 5678 default user
code *#110*01# engr
mode *#987*99#
restore to factory *#
987# factory mode *#
369# LCD contrast