My MR600 is working fine with Jio and Airtel sim with better speed than on phone. I have also attached external antenna for better network strength. I am also getting 4g+.
But, VI / Vodafone-Idea sim is not working as expected. On phone I am getting more than 20Mbps without any extra configuration.
When I use tha same sim in MR600 it all bad, network strength is lower than what I get on phone. I tried all changing bands and APN setting but no luck.
Band available at my place: 2100 (B1) / 2300 (B40)