I have a Mac with MacOS 10.13.6 and an iphone SE with iOS 11.4.1, and I sync by means of iCloud. Recently I realized that my bookmarks were no longer syncing either way. I tried the usual remedy of signing out of and back into iCloud on both devices, to no avail. What is more, I have now discovered that my browsing history is also not syncing between Mac and iphone. Everything else — Calendar, Contacts, documents — is syncing perfectly well. So this is a general Safari problem, not a specific bookmarks one. Any help will be very much appreciated.