ESP8266 Community Forum

Has someone already managed to connect a SIM800 GSM module to the ESP8266?
I plan to do that and do not want to reinvent the wheel.
I would especially be interested in the procedure to create the Internet connection and potentially to switch over to WiFi.

There are readily available SIM800L / ESP32 board available that are pretty cheap (€10 - €15 range), so you might want to check those out, hardware wise.
For those boards there are also a lot of projects and ideas to be found on the internet.