There is so much buzz and hype surrounding the iPhone that it is rare for me to hear specifics about how useful it is in day to day tasks for other people.

Here is a list of the main features I use on my iPhone:

– a cell phone (duh)
– calendar (this is absolutely essential)
– password manager
– Internet browser
– camera
– note taking
– financial manager
– social network stuff like Twitter and Facebook
– keeping up to date via mobile version of Google Reader.

Not terribly exciting or innovative stuff, I know. But these features have become essential to me every day. Note that using the device as an iPod isn’t mentioned. I like having iPod capabilities but it turns out that I don’t use them that often.