I loved Tresorit but it's camera upload feature didn't transfer files correctly from my wife's iPhone - it left them corrupted and unopenable with no warnings o

I loved Tresorit but it's camera upload feature didn't transfer files correctly from my wife's iPhone - it left them corrupted and unopenable with no warnings or errors whatsoever. Unfortunately because of that alone I dropped them completely. I'm using Dropbox now because I haven't found a better alternative for syncing between iPhone/Android/Windows/Linux.