Huawei dtab-01G unlock done by Sigma key.unlock procedure first go to the calculator then hold the tab in horizontal now u see a big calculator,now type ()()2846579()()= then go to manufacture mode in usb port setting on it now connect the tab to the pc install required drivers then open Sigma key,select tab Hisilicon now go to port setting and select android modem port then click on Direct unlock done..
