I have just returned to Europe from a longer trip to the US and have experienced interesting behavior there with NetGuard / Play store / US T-mobile which I'd like to describe here.
I don't think it's caused by NetGuard — I'm guessing T-mobile — just am curious what could be the cause of the behavior.
Basically — I have NetGuard rules properly configured that allow downloading and installing app updates from the Play store. Once in the US I could no longer install app updates — the store would get stuck with “waiting for download” or “download pending” message.
The only way to install an app update or a new app would be to turn NetGuard off and the apps would install promptly. I've experienced the same behavior on a prior trip too, so it's a constant behavior. It was also in effect when I'd connect to a Wi-Fi and try to install, it wouldn't proceed.
Now I've landed in Germany and immediately the apps install with NetGuard running no problem.
What is the probable cause of this?