I have noticed that on my 7.1 I currently cannot send WhatsApp picture messages over wi-fi. The signal is good and phone connected for browsing etc, the phone will send the picture messages when I turn wi-fi off and use mobile data.
I have googled for this issue with WhatsApp but found no results, so think it may be tooto with the phone (Pie update possibly?).
I have found other app issues with the phone, e.g. not loading BBC Sport app sometimes when you are signed into the apps account but then working when you sign out!
Anyone else having similar issues