Hi Rui and Sara, best your work, did you have a firmware recomended for a LilyGo-T-Call with SIM800L over ESP32 and 4MB. Im using for DEVKIT V2 but some features can´t reached. Pls if you can, send me a link or “bin file”, thanks.
What features are you talking about?
Are you programming using Arduino IDE or micropython?
USSD codes, but i think it was the cell provider. i’m have been a little confused, but now i’m clear. i’m reach the bridge function between GSM module and ESP32 core. Thanks for your expectation and quick answer. See you. best regards from Colombia…