I have two samsung J700, which were given to my children by their grandparents, and have put in an 02 sim, but they are both asking for unlock codes, they both have been virgin phones. can anyone help me to unlock them please.

Hi welcome to fixya.com.Please follow instructions below.Type *#9998*627837793# Go to the 'my parameters' and there you will find new menu where you can unlock phone.(not tested-for samsung C100)
To unlock a Samsung turn the phone off take the sim card and type the following code *#pw+15853649247w# .
Java status code: #*53696# (Samsung X600)
If you want to unlock your phone put a sim from another company then type *#9998*3323# it will reset your phone. Push exit and then push 7, it will reset again. Put your other sim in and it will say sim lock, type in 00000000 then it should be unlocked. Type in *0141# then the green call batton and it's unlocked to all networks. This code may not work on the older phones and some of the newer phones. If it doesn't work you will have to reset your phone without a sim in it by typing *#2767*2878# or *#9998*3855# (not tested). Hope this helps you. Regards

samsung mobile unlock code varies in different places so first select your place and download a unique code from the given link..
www.mobileunlocksolutions.com
then after getting the code swith on your mobile and insert a different sim card rather than your previous sim card and enter the code you got form the given above link..
if it shows insert correct sim card then follow these following steps
1.swith on your mobile with an invalid sim card..
2.dont worry of the information shown in mobile.
3.compose: #0111*your purchased unlock code#
your phone will be unlocked.......

If you want to use your mobile with O2 network you have to unlock it to vodafone network. Unlocking can be done easily at www.unlocking4u.com.

take sim out then put in # * 7337 # phone resets then its unlocked

try this code without sim # * 7337 # phone resets then its unlocked

have you tryed another sim if the same try unlocking that may do it if that way take out sim power on input # *7337 # phone resets then its unlocked

take out sim power on phone input # * 7337 # phone resets then its unlocked

Unblock or unlock?

It can be 'unblocked' if its barred but if its 'unlocked' you want then...

BACK UP YOUR FILES BEFORE UNLOCKING
This will also bring the phone to default settings
1. First do a CUSTOM reset: *2767*2878# (star 2767 star 2878 hash)
turn off the phone
2. take out the battery and sim and put wrong network SIM and insert a half of it,
so it won't ask for network password and shows "Insert SIM" message.
Now put the battery ,and switch the phone on .(phone shows "Insert SIM" message.)
3.With out turn off the phone push the sim fully in. At this stage the phone is still asking to "Insert SIM"
4. Make a FULL reset by typing: *2767*3855#(star 2767 star 3855 hash)
5. The phone should reboot working with "wrong" sim inside.
6. Make a Change the NCK password to 8 zeros by typing: *7465625*638*00000000*00000000#
(star 7465625 star 638 star 8zeros star 8zeros hash)
7. Now Disable network lock By typing: #7465625*638*00000000#
(hash 7465625 star 638 star 8zeros hash)
Phone is unlocked (check with *#7465625#)
If network lock is still on reply back

you need to go the the phone shop and ask to get the phone unlocked then you can insert a sim card of your choice.

Type *#9998*627837793# Go to the 'my parameters' and there you will find new menu where you can unlock phone.(not tested-for samsung C100)
To unlock a Samsung turn the phone off take the sim card and type the following code *#pw+15853649247w# .
Java status code: #*53696# (Samsung X600)
If you want to unlock your phone put a sim from another company then type *#9998*3323# it will reset your phone. Push exit and then push 7, it will reset again. Put your other sim in and it will say sim lock, type in 00000000 then it should be unlocked. Type in *0141# then the green call batton and it's unlocked to all networks. This code may not work on the older phones and some of the newer phones. If it doesn't work you will have to reset your phone without a sim in it by typing *#2767*2878# or *#9998*3855# (not tested)