This is my 3-month review. I had to do an upgrade - and picked the iPhone 4 on ATTWS for my personal phone because my old, 5-yr old SLVR L7 was not going to work with the new network upgrades. I was in no rush to get a data phone since I've had a back-and-forth cycle of Blackberries and Treos for work for the last 8 years and had on-the-road access to my home Verizon email and the web that way. And I was pretty happy with my iPods, the latest being an 8G Nano & I could not comprehend the iPhone craze. I know better now. What a great product. If you have a good enterprise smartphone like a Blackberry like I did - I would still consider Apple iPhone for your personal use. I got a great deal from ATT, under $55/month before tax for 450 minutes, 2G data and unlimited messaging. I was paying $35 for 450 voice alone previously. Not an expert, and it's been some time since I unlocked anything. But this iPhone 4 is just a great product: - Keyboard can be annoying -vs- a keypad but I am OK with it - I don't miss trackball scrolls. - Apps for travel like AMEX, AA and other airlines aren't any better than the mobile versions, but some news - like Fox, ABC, CNN, you name it - are a huge improvement. - Safari is excellent. Far better than Windows mobile or the BB version, even for regular sites. For example, I have a wsj.com account subscription for about $200 a year. The wsj iPhone app wants another $50 a year for full content. Don't need that capability. If something pops up on the app requiring that additional "app fee" I just open wsj.com on Safari and sign in, and I can read all of it. Even web sites not configured for mobile devices are easy to navigate and read. That was a PITA on Windows Mobile. - The mail client needs to allow deleting individual recent calls and some capability to synch to desktop Outlook folders w/o going the GMail route. - Battery life is good. I don't set push for email and easily get 24 hrs or more with normal use if not using stuff like maps or watching a movie. - Easily loaded some "handbraked" movies. - With a thin aCase this iPhone easily fits into a Timbuk2 medium or the basic RedOXX clip holster. - The Data Viz app for word and excel is seamless. It supports password protected files among other capabilities. - It would be nice if I didn't have to go thru iTunes or an app Like DataViz for loading everything, but I guess drag & drop from a mini USB isn't in the cards. Overall: A. Great product - A+ if mail had a few more options but this thing is an excellent complement to a work Blackberry but not a replacement for something like an HP netbook if you need to do serious work on MS Office files.