A7670C Network Registration

I bought is module as it supports 4G. I initially bought GSM SIM800L V1 and V2 and used my 2G sim on it, but I also had 4G which it does not support hence the module.

In the video, I initially used a Jio 4G sim. I used a 12V 2A power adapter and you can see the Net led is not at all blinking, which according to the module data sheet means it's still searching for a network. I tried this in different locations but no luck.

Next I used the 2G sim and now you can see the Net led blink. It apparently means in Data transmit status but has not registered to a network.

Where did I go wrong with this and what must do?

Link to video : A7670C Module not working properly

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