Every time I open the game on mobile it download 0,48 Mb
It isn’t only you. I see this behavior also. It started around the release of 3.3, I believe.
What file is being downloaded here, and can the devs edit a date in their server copy to stop this? 480kB (probably) isn’t going to break anyone’s data limits, but it is irritating to see.
This seems to be a persistent problem. Every 3.x release has been plagued by it.