 So the iPhone 4s physically is almost identical to the iPhone 4. The antenna notches at the top of the phone are in slightly different places on the left and right sides. The iPhone 4s also has a faster CPU than the previous version. It's the A5 versus the iPhone 4's A4. It's the same CPU that's in the iPad. Also, the camera has been massively upgraded versus the old version. It's now got an 8 megapixel camera which takes really beautiful, very, very nice looking pictures. I definitely think you could use this as a replacement for an average to decent point and shoot camera. It also does 1080p video which looks really great and now has image stabilization so your shots will be a little less bouncy than they were previously. But of course the big feature with the new iPhone is Siri functionality. Siri is something that Apple is calling an intelligent assistant. You can set reminders. Remind me to call my wife at 6pm. Here's your reminder for today at 6pm. You can find out all kinds of weird facts through Wolfram Alpha. How fast is a cheetah? Checking my sources. This might answer your question. Siri can also read your text messages back to you and it will take dictation so you can send text messages and emails. You'll be sorry you said that. You can see here that Siri doesn't always take perfect dictation. Siri can tell you stock prices nearly in real time and she can also give you weather forecasts even if you ask pretty normal human language questions. Should I wear a raincoat today? So in all the iPhone 4s is a pretty nice bump if you're a 3GS or lower user. If you're an iPhone 4 user there's not a ton of new stuff here. It is faster. Not super noticeably faster but definitely faster. The camera is way improved. I mean it's probably one of the best if not the best camera I've used on a phone. And then there's the software improvements most of which will come to the iPhone 4 but Siri will not. If you've got an iPhone 4 I think this is somewhat of a hard sell. I don't feel like there's a ton of compelling stuff here to make you want to upgrade. But if you're on an older model or if you're thinking about switching there's no question that this is definitely one of the best smartphones you could possibly get right now. Siri who made you? Like it says on the box. I was designed by Apple in California.