iPhone configured for Exchange is showing blank message bodies
cause is unknown, but fix is simple.
on the iPhone, go to Settings -> Mail, Contacts, Calendars
select the Exchange account.
turn off Mail sync
press home button to go back to Springboard
press and hold Sleep/Power button until “Slide to turn off” comes up, and slide to turn off. once the phone is powered off, turn it back on.
once back to the Springboard, go back to Settings -> Mail, Contacts, Calendars and select the Exchange acount.
turn Mail sync back on.
press home button to go back to Springboard.
open Mail and verify that message bodies now appear for the Exchange account.