etc. stands for everything the supprt wanted me to do. inclusive buying a new Phone and returning the "old" one.
it is by far to easy to say it isn't a bug just because it is network traffic. network traffic all the time is a bug. there is
absolutely no other position than seeing this as a bug. a constantly turning spinning wheel is simply not correct. especially
when compared to other phones that dont have this problem when same apps and same SIM card are used.
your feedback is very welcome in case you have any better advices than:
"If it annoys you or if you are worried about cellular data use then turn off all cloud services or make them wifi only.