Let me try to put this in perspective for you as a former Android "fanboy" who came over to the iPhone. I can relate to your desire to customize widgets and other things, and when my iPhone was stock, it was...well....boring. I learned that although the interface was simplistic, the ability for the phone to sync seamlessly and trouble-free with my Mac and my Apple TV was absolutely AWESOME. All the apps also worked without a hitch-no Androidlike hangups, freezes, crashes...it was absolutely a breath of fresh air. This phone is ideal as a work phone-especially if your work computers are Mac based. Those who are PC guys exclusively may find the iPhone a bit troublesome and has some glitches..though not a whole lot. I can honestly say once I used the phone for a couple months, I will never go back to Android. No matter how big a screen they make. lol
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As far as Jailbreaking, it is an easy process. It's definitely nothing like rooting an Android (which was a pain in the izzazz). The phone can easily be restored back to stock if you need to turn it back in or have it serviced. I jailbroke mine about six months after I got it, and I love it even more now. You can add clock and weather widgets, you can add wireless tethering, you can add Facetime over 3G, blah blah blah. Plenty of threads in here and on other sites that outline all the jailbreaking capabilities.
I just have to summarize by telling you to give it some time. It's definitely one of those things that you have to USE the iPhone for a while before realizing how simple it is, how trouble-free, and how not having useless widgets and fancy buttons matters not when you have a phone that performs like it should. I know a lot of the newer Androids aren't plagued by the random reboots and battery pull issues that my Droid X had, but those problems got me so ticked with them that I made the leap. Yes, I was a bit frustrated by the lack of features akin to Android on the iPhone, but once you find workarounds and substitutes, the iPhone works just fine. Jailbreaking is the ultimate way to squeeze all the functionalit out of this phone, and I am going to stay jailbroken as long as I have an iPhone.