Trick To Unlock Samsung J706..

1. Turn the phone on without a simcard
2. insert the simcard without removing battery (this can be done without turning the phone off)
3.Enter *2767*3855#

Then wait a couple of minutes after phone resets and restarts..
it will not say restricted simcard anymore (this is temporary)

* type code *7465625*638*00000000*00000000# (EIGHT ZEROES)
* then #7465625*638*00000000# and (eight zeroes again)
* then *#7465625# this will show you that all the locks on your phone are inactive.

You are all welcome..

(Please comment which phone you tried this on and it worked..._ Also you can try this with a simcard already inserted...)