Just the other day my wife's iPad mini ran into a weird networking problem (x). It still had a working internet connection (e.g. YouTube and Netflix could be reached) but it could not play video clips, forever stuck loading with the rotating indicator.
Most of the software and network settings are hidden to the user, so the usual things I would have tried on a PC were not available. I also noticed that Google does not find too many useful tips on how to fix such problems (very different to the load of information I would have gotten for e.g. a similar PC/Linux problem).
But we tried several things: Re-starting the wi-fi connection, changing the DNS server of the wi-fi connection (*), re-installing the apps, re-starting the iPad and finally rebooting the wireless router. Nothing helped.
Finally I discovered that the General settings of the iPad have a software switch to reset network settings to factory values. And this solved indeed the problem. This reset took quite a while and the screen goes blank for a brief time - but when the iPad returned to life the problem was indeed gone ...
(x) Initially and in between it was not always clear that this was indeed a networking problem. But I am telling this short version of an otherwise boring story so that people experiencing similar problems with their iPad (and unaware like me how this gadget actually works) know what they can do to fix it.
(*) Btw Google provides a free DNS server at 22.214.171.124, which is great for troubleshooting of this kind. However, if you are worried about Google tracking *all* your internet activities I would not use it permanently.
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