title_body: Kindle highlights not syncing between devices I have the Kindle app on my iPhone and iPad. When I go into a book on the iPad and add a highlight I never see it appear on the same book on my iPhone, even if I press the sync item from the side menu on the iPhone.
upvoted_answer: I was able to fix this by removing the book from my iPhone and redownloading it.
  
  Now if I want to see highlights sync immediately between the devices I have to go to the Library after adding a highlight and then go to Library on the other device, press sync and go back into the book. Then a few seconds later the highlight appears. 
  Not ideal but it works.