More than likely need to add APN, those routers have a built in APN, usually Chinese network related.
Or Sim card supporting band is not the same as the routers.
Login to the router -
• Settings >> advanced >> Network >> Internet >> profile management >> create
• Add the APN details for your network.
More than likely need to add APN, those routers have a built in APN, usually Chinese network related.
Or Sim card supporting band is not the same as the routers.
Login to the router -
• Settings >> advanced >> Network >> Internet >> profile management >> create
• Add the APN details for your network.