TTGO T-CALL: How to connect to the internet via SIM800C

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1

I have a TTGO T-Call with SIM800C. I used examples from Github GitHub - Xinyuan-LilyGO/LilyGo-T-Call-SIM800. I tried to send a text message with my BSNL sim and it worked. I am trying to send some raw data to Google firebase by connecting to the internet via a cellular connection. I tried to use the MQTT Client or the HTTP Client to connect to the internet, but the example code is not working. Even though the code compiles, it doesn't connect.

Please help me out. Thanks in advance.
Kunaal Kiran Kumar.

2

The issue is way out of my comfort zone.
However, debugging is needed.
You manage to connect. Then I ask You to print out debug messages for more or less every line in the code, having hope there will be something You can hook on to.