13. Sync notes with your computer
Right up there with to-dos is notes. The iPhone includes a Notes application that has a fun yellow legal-pad look. The mystery and limitation is that there's no real mechanism for doing anything with notes once you create them. Yes, you can email them, but if that's all you can do, why not simply write yourself an email in the first place?
Notes are nice, but what to do with them?
Most other mobile devices support the concept of notes as something that is synced with an information management tool (typically, Outlook on Windows and a third-party application on Macs). This makes notes a much more functional tool because you can organize them like contacts or to-do items. With some applications, notes can also be shared among users.
To make its Notes application truly useful, Apple should also take this approach and allow syncing of notes either with a self-contained notepad application running on a user's computer or with an existing tool such as Outlook in Windows or Mail in OS X.
14. Send text messages to multiple contacts
The iPhone's Text application is one of the coolest-looking features on the device. With an iChat-inspired interface, text messaging feels more like chatting. Everyone who sees it likes the look of it.
There's only one problem: you can't send the same message to two or more people at once. While I like the conversational approach, if I'm trying to connect with people while I'm out or planning a get-together, I often want to send the same message to multiple friends.
The iPhone is the only phone I've used that doesn't offer the ability to address a single text message to multiple recipients. For frequent texters, it can be a big hassle to retype the same message five or six times. Even if the only way to work this into the Text application's interface is to generate multiple conversation threads when a message is sent to more than one person, this should be an option. In this area, Apple has uncharacteristically missed the mark of the old adage "form follows function".
15. Add an RSS reader
Apple did a great job in translating Safari from a desktop web browser to a mobile one, thanks mostly to its multi-touch technology. One feature that didn't carry over was Safari's ability to subscribe to RSS feeds. (Honestly, Safari never was the greatest RSS reader, but at least the feature exists in its desktop form.)
RSS readers for mobile devices offer a quick way to aggregate and view content. Since RSS feeds are typically content-only (ie, they don't have complex page-design elements), they are particularly well suited for mobile use - especially given the speed limitations when connecting to the internet using EDGE.
A built-in RSS reader, either as part of Safari or as a separate application, would be a great addition to the iPhone for users who want a quick way to keep up with news and blogs on the road. Until one is available, however, the mobile version of Google Reader serves as a good alternative.
If Apple makes these changes, the next-generation iPhones will be truly phenomenal devices. Did we miss anything? Do you have any iPhone pet peeves you'd like to see Apple address, or any work-arounds for the problems outlined above? Tell us about it in the comments area below.