it’s the best mobile device, no question.

but it is missing a few things:

• back button – there is no way to go back to the previous screen. you have to press the ‘home’ button and start over. they should have given users a way to go back whenever they want. either by adding a button, or a general purpose multi-touch action
• copy & paste – there is no way to copy and paste. really basic and really missing
• ability to capture videos – you’d expect the camera will enable you to record short video clips. but no. weird. (btw, the quality of the camera is kind of poor. for a $600 device you’d expect more)
• ability to refuse an incoming call – if the phone is locked and someone is calling you can’t ignore the call. only silence the ring.
• typing a name while in the contacts screen – if you want to call someone from the contact list you can only browse through the list. you can’t start typing the name and getting a subset of the contacts.
• connecting to other devices using WiFi – you can only connect to an access-point not ad-hoc to another iPhone (or any other WiFi enabled device.
• GPS – the google maps is great. but putting a GPS in this device would have made it much better.
• using MP3s as ringtones – you can choose one of your MP3 files to serve as a ringtone, which does not make sense (i assume the greedy AT&T wanted that feature blocked to generate ringtone revenues. i am looking forward for the hack that will remove this stupid limitation)
• ability to upload pictures to flickr/facebook/etc. – this is pretty basic. right now you can only email photos.
• more applications – they should open up the platform and fast. right now it has a great potential but if we will depend on Apple and AT&T deciding what applications the user can install it will be a waste of a great platform.

the most important thing missing: making calls over WiFi (using Skype or some other VOIP client)