I hate to say it, but it's user error. The head unit is working as it should. To put it in NOOB terms, the iphone is like a keyboard to a computer. The type of keyboard (basic or Gaming)has different options and the computer although unchanged, reacts diffent. Simply put, the iphone is an enhanced keyboard and will react as defined by its' IOS manual.
By all means don't take this personal, as I too would never read the manual. What made me read the full not quick start manual, was when I noticed one day, that the majority or people having problems with tech were old dogs (persons 60yrs to 80y