You can identify where is the problem by syncing another phone with your Exchange server. I Haven’t been able to find them despite following your ideas. It’s possible all the pictures and videos on your iPhone might have overloaded your device storage, causing a malfunction. The titles of my AOL notes on my iphone are visible, but the notes themselves are blanks. Restoring your phone to a previous back up might get you your notes back! If you’ve been having trouble connecting to an email account lately, that could be another clue. Is the Apple iPhone a good phone to buy? So open up your Notes app, then enter the folder where your sensitive notes are. I was copying the 233 notes from my ipad icloud notes, but then they went completely blank.