Yesterday I dropped my iPhone 3 G, and of course I didn't have the case on, so I managed to damage the cellular antenna (the wifi and cellphone parts of the phone have different antennas). After a couple hours, it was clear that the phone reception was pretty messed up, so this morning I went to the Genius Bar and had them take a look at it.
They were able to get some of the connectivity back, but I decided, it's time to get another phone. So I got an iPhone 4, a case that I'll ACTUALLY KEEP ON THE PHONE AT ALL TIMES, and a screen protector.
I also decided to get a bluetooth keyboard, which works with this generation of iPhone. I'm still hopeful that I can dispense with the laptop when I'm not doing really high-intensity editorial work or writing, and the keyboard is an essential component in making any such plan come true-- whether it's with the iPhone, an iPad, or something else. There's just no comparison between how quickly I can type, and my pecking on the little thumb-sized virtual keyboards.
I doubt I'll be able to dispense with the Macbook often, but I'm going to think seriously about what things I actually use on the Mac when I'm working, and how I could replicate them on some combination of mobile device, keyboard, and cloud.
I've done some writing in Google Docs, and I think that for at least parts of my book project, and many articles, I could use it instead of Word; I also need to look at having a setup where I have master copies of Word or other documents living in the cloud, and accessed by various devices. (Actually, for things like my personal library of PDFs of scholarly articles, I wonder if iCloud would actually be useful.)
I've also got to find a case for the keyboard, and a stand for the iPhone-- and preferably have both functionalities in the same object, which I suspect I'll have to commission from someone.