Battery Settings

For a correct Situm Mapping Tool working, it is recommended to have the Battery saving disabled. 

This action can be done from Settings> Battery> Power Saver (it depends on the model of the device) > Disable.

In addition, it is also necessary to deactivate the battery optimization option. This action can be performed from Settings> Battery (power) > Battery optimization

Then, we choose All apps:

And we search for Situm Mapping Tool app

Once located it, select the option Don´t optimize.