I believe it'd stay there for a day, a week, a month something like that, but eventually would get cleaned. A reboot should do it too. - Not tested any of this, but basing it off of how a /tmp folder usually works. - What I have tested though is actually that if a page in private mode is open when your device runs out of power the same page will open next you get juice and open Safari - though that was a few iOS updates ago.Thanks for the answer. Just out of curiousity, what happens if Safari crashes? Does the data get cleared from that temp folder?