After new update dual Sim 4g is not working properly. One of the Sim network keeps changing from 4g to 2g (Airtel). It works fine with one Sim turned off but as soon soon as I turn on both the Sim in 4G mode one of the them start converting to 2G mod...

With the new update dual sim 4G is not working in Samsung M21. This is really pathetic, Samsung should have told the users.

After new update dual Sim 4g is not working properly. One of the Sim network keeps changing from 4g to 2g . It works fine with one Sim turned off but as soon soon as I turn on both the Sim in 4G mode one of the them start converting to 2G mode automa...