The following are just my opinions and findings in real life everyday use from someone that used a iPhone for 3 years and not a formal tech review. Android Samsung Captivate vs iPhone Screen = Much better than iPhone 4 in size and resolution. This is not base on specs on paper but me actually holding both phones in my hand. Processor = Faster than iPhone 3GS Operating system = Android 2.1 - A little more complicated than iPhone but does much more. Ver. 2.2 should add even more features Battery life = Much better than iPhone Battery = Replaceable unlike the iPhone App store vs Android Market Place = About the same amount of apps but if you buy an app in Android, you can get a refund within 30 minutes. I've done that and it works. Apps = Pretty much everything available for iPhone is available for Android Email = About the same Browser = A little better than the iPhone due to larger screen and sharper display. Camera = Higher resolution than iPhone 3GS - 5mp vs 3mp but iPhone camera is a little easier to use. Neither have a flash. Music = About the same as iPhone although there is a simulated surround sound mode and the Samsung. Memory = Android has 16gb internal but can use Micro SD memory cards up to 32gb. The iPhone can't. Voice recorder = Yes, like the iPhone but the iPhone seems to be better quality sound. Keyboard = Better than iPhone. More choices for keyboards including handwriting recognition and "Swype". Haven't tried "Swype" yet. Sync with Mac = No but it will sync with Google contacts and calendar. Phone and sd card can be accessed by the mac to transfer files. Voice dialing = Only from the phone not the bluetooth headset. This should be resolved with Android 2.2 coming soon. There may be an app for this. I haven't looked. Voice announcements = Yes. It will say out loud that you have a call, text or email and who it's from. iPhone does not do that. Earbuds = Actually really nice unlike the useless buds that come with the iPhone Cell signal - Better than the iPhone for some reason. All in all I like the Samsung Captivate better than the iPhone. After 3 years it was time for a change and to me this was a nice upgrade.