I have a sixfab 4G LTE shield and a module with 4G Sim, I have been using this with one camera connected to Raspberry Pi and a Adafruit GPS module. However it required to be that there have to be two cameras connected to the raspberry pi. The issue arises when I turn off WiFi and switch to data and both the cameras still being on(green LED on webcams) start showing “select timeout” error and do not recover. However when I am using WifI and/or not using any internet services it works completely fine and store the recorded videos.
Need some help in this regard.