Well, the phone is here, and these are my first impressions. It's big. It doesn't fit my hand. The 4S was so comfortable it felt like part of my palm. However- maybe in a grippier case, with protective glass- I won't be so worried. And I am not willing to give up the larger battery, the better camera, and the nicer display for e-mail and iMessage, in the landscape orientation. I love it. It is so responsive. Everything transferred over just fine from the MBA. I had one little glitch- in attempting to attach a photo in iMessage, iMessage would quit. By Googling, I found out the solution was to turn off Speak Screen in Accessibility, and do a hard reset. It works with my car stereo, Bluetooth found it right away. For some reason, my thousands of e-mails didn't come over, maybe because I had iCloud Drive turned off in the 4S (for some reason I don't remember now). But that's okay- I went a good portion of the day today with only one e-mail on my phone! I think I'm up to seven now...So- love at first sight- stopping at Best Buy on the way home for a glass screen protector- ordered the iottie car mount overnight- I'm excited for a road trip Sunday!