I am writing this after having spent a full week with my beautiful 8GB iPhone. I have been a loyal Apple user since I first began using Apple IIe's in elementary school. The iPhone is another great device in a long line of revolutionary computing creations.
That said, I thought I would give my "2 cents" about a few things that I (along with many others I am sure) would love to see changed in future software/hardware updates or revisions.
For starters, my previous phone for the past two years has been a Palm Treo 650...that gives you an idea where I am coming from.
Here are my suggestions for the various functions:
Email: Really need the ability to create new mail folders within the different email accounts. I use POP vs. IMAP and really am missing this feature which my Treo had. There also doesn't appear to be a way to save photos which come in via email and that would be nice. Wide-screen keyboard option would be lovely here as well.
Phone: It would be nice to have a one-touch dialing feature. Also, as many others have probably noted, the call volume needs to be considerably louder. Under "Recents" there should be more categorization than just "All" or "Missed". What about about differentiating between "Dialed", "Received", and "Missed"?
SMS: First, a "quick-note" or template feature is badly needed along with graphic smileys. Secondly, MMS functionality needs to be added. Last, but not least, please let us use the wide-screen keyboard option when typing text messages!!!
iPod: Perfect!!!
iCal: Support for the color coding of different calendars was a BIG motivator for me buying this phone. I was sorely disappointed to see that it doesn't exist.
Safari: Two issues here..."copy and paste" and opening links in new windows. We need both!
Ringtones: I am sure there are various laws, copyright issues and underlying corporate intentions involved here, but why in the heck cannot we not use a song from the iPod as a ringtone?!?!?!?!?
Also, it would be nice to have customizable sounds for the different alerts (ie new SMS, new voicemail, etc).I think support for third-party ringtones in general would be a HUGE addition.
Camera: Works well and takes nice pics for a phone, but the light sensitivity is a little off at times. Video capture would be nice as well.
General: I think the biggest thing I would ask for here would be the ability to customize the "home" screen of the iPhone. As a musician who doesn't play the stock market, I pressed the "Stocks" button once to see what it does, and will probably never use it again. It would be neat to be able to replace that with another app. or a shortcut to another feature or setting.
Thank you for taking the time to read my comments and most of all thanks for making such an innovative product!