Freematics Forum

Yes using ESP32 DEV module. Make sure you have FreematicsPlus library imported.

A customer reported this issue solved by using a local (non roaming) SIM card first to activate and then hologram sim cards can be registered on the network.

This is not possible.

For prior 2020 devices, please keep using the older code that worked for you.

Are you using the latest code? Please provide your serial output.

No operation including reading voltage can be done in low power mode.

What's the cellular module's state code (can be found in serial output).

Traccar edition has no SIM7600E-H option. It only comes with ONE+ Model A and Model H.
Could you provide your serial output so I can further advise, especially when the device is about to wake up?

We have shipped thousands of this GPS receiver around the world and has barely heard about an issue like this. One data a week does not sound normal. Are you sure it is not caused by transmission? How do you collect the data?

If IP is obtained, this is not a hardware issue. Check if the SIM card has got enough balance.