L The List
OS 3.0 LagAll apps seem to take much longer to load/unload after the OS 3.0 update. Laaaaaaaag.
Battery DrainTo be honest, I don't mind this so much anymore given the iPhone's spectacular display and powerful applications. You can't have your cake and eat it, too, right?
Categorizing AppsOr the complete lack thereof. Give me a way to categorize my apps, please. Having to type in the app name via Spotlight or scrolling through every single screen isn't efficient.
Also, how about something like a "bin" to temporarily place all my apps that are on the back burner? I don't necessarily want to delete them, but they don't need to be cluttering up screens.
Accessing the Keypad During CallI'm of the opinion that the keypad AND the other options can all be visible on one screen. The lack of physical feedback is bad enough--why would the designers also want to hide the keypad and force me to manage states while I'm on a call? There's plenty of space available!
Speakerphone VolumeThe speakerphone volume is too low. Why can't it blare loudly just like when I'm playing songs with the iPod app? And NO, I'm NOT using speakerphone in public...
Shutter Release ButtonTrying to take a one-handed photo is tough on the iPhone. You have to balance the device while trying to depress the shutter release button. Couldn't the designers just overlay the button on the top-right or top-left side of the camera (depending on whether you're left-handed or right-handed) where your thumb would naturally rest instead of the 90 degree angle required at the bottom?
Note: The shutter takes way too long... lag.