@ Yong Vannak,
This phone model can be unlocked by the Smart-Clip. In case if you have Smart-Clip box, check
this link for the detailed unlock manual, please.
Please notice that in order to unlock M702iS
Smart TestPoint cable is required.
All TestPoint pictures available for download from Help->Gallery->... section of
https://www.boot-loader.comBoot-Loader.com
Best Regards
GSMServer team