In a recent discussion in the Apple Support Community (ASC) a user complained that a certain Chinese character was not being displayed correctly. As it turned out, it was one of those where the Chinese and Japanese forms are quite different, and his phone was displaying the Japanese version. This is caused by the device using a Japanese font, instead of a Chinese one, whioh will happen if Japanese is higher than Chinese in the Preferred Languages list. The particular character was the one for "drink":
For other examples of characters where this can occur, see the chart labeled "Same code point, different language tags" on this page.