Last night I was attending the iPhone SIG of the Florida Macintosh Users Group (FLMUG).

One of the members was asking about an icon in his status bar he couldn’t identify.  It looked like a landline telephone’s receiver with a keyboard underneath.  We scratched our heads for a minute until Phil said “wait, that’s gotta be the TTY setting”.  He quickly looked in Settings under “Phone” and yes, the TTY setting was on.  The icon went away when the setting was turned off.

Kudos to Phil for deducing the answer based on the “phone” and “keyboard” clues.

So today, I had to go lookup the other icons which may be displayed, just in case. 🙂  They are listed by Apple as “status icons” here: