Sim800l is not responding anymore after a few days of continuously working and requires restart/reset. It won’t recover by itself or respond to any commands unless a restart or power off is made. If I restart the sim800l it will work for another few days.
Same behavior on two different sim800l modules.
The module is powered by a 5v 2.5 A power supply in parallel to the raspberry pi. 115200 baud rate is set.
I have tried a DC to DC (2.5) step down buck converter to power the module with 4V 2.5A separate power supply with common GND for SIMcard, raspberry pi, and module.
I don't think poor network or Transmission burst is the problem for now. It works for 12 days in the same network conditions and then stops working for a long time.
Is someone else experiencing the same behavior? Any suggestion or information would be helpful.