@Midasfolks Also, because my rouder/modem is using mtn sim card to connect to internet, is there any online resources to use card ISDN/phone number to see its wan IP or connect to the router/modem?

@Alligatto I am having exactly same challenge with MR6400. Now is there a software version or some thing that can enable me see the wan IP through Mac address or tether app? Its frustrating Thanks