This may not be a pure JB question, but it's not necessarily a general help topic. Since doing an upgrade to 3.1.2 on my JB 3GS, my iPhone has changed name. It used to be labeled with my first name. Now it displays as "iPhone" in iTunes. I have all of my apps and data and all is well, but for some reason I feel that I should label my phone less generically. Is there an easy way to rename the device?