content: The shit stains at Apple did this when I went from 9 > 10. I backed up, updated to try wifi calls etc.  Seemed shit, went to revert backup. Can't revert backup over whole version upgrade, but iTunes warned me about turning off find iPhone to revert, and upon checking the iCloud was logged in with my iTunes details etc! So I turned it all off and called Apple. They don't even know how their iCloud works.  Ie, was data there, then deleted when I turned it off, did it never end up there? Etc? Useless shits. They're all for forcing default on with this shit now.  Once upon a time I trusted notes and calendar data were safe but now there is a risk of leaks into the digital ether just like texts, calls and internet stuff, the whole usefulness of a mobile phone is gone again now. The internet is a disease. If you don't use it without protection these days you're fucked.  And it's the big companies and gov doing the fucking!