Which smartphone is most like an iPhone?

I'm in the market for a new phone. I want an iPhone but my plan is prepaid and 600 bones is jut way too much for me to spend on a phone. What are some smart phones, preferably androids that are most similar to te iPhone?

Samsung sIII or sony xperia

No android is similar to iphone they are just plain better and faster with more features. I recommend getting the Nexus 4 off of googles website. Its 350 unlocked and its only a few months old. Very cheap phone but one of the best available. In my opinion the nexus 4 is THE best available

Nexus 4. The screen is a bit bigger (wider) than the iPhone 5, it doesn't have LTE like the iPhone 5, and it runs Android not iOS, and it's not made out of glass on both sides, but it's only $300 off contract and other than that is pretty comparable.

One way that it's most like an iPhone among Android phones is that, being a Google product, it gets the unaltered Android interface and it gets updates as soon as they come out.