The iPhone 4 was announced on July 7, 2010, at the Apple World Wide Developers Conference. It was the first iPhone ever offered for sale by Verizon, ending Apple's exclusivity deal with AT&T.
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Q: Which iPhone model was released in the color green?
It's been the only iPhone model to date that uses the bold color.
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A: iPhone 5C
The iPhone 5C, available in blue, green, yellow, pink and white, was released in the U.S. on Sept. 20, 2013.
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Q: Can you identify this iPhone just by looking at its rear?
The plasticky, white backing of the phone should be a giveaway.
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A: iPhone 3GS
The third-generation iPhone 3GS, released on June 19, 2009, was the first iPhone to be released in white. It was the also the first model to feature voice controls.
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Q: It's so cute and tiny! What is it?
The rear of this phone is silver, with a black band at the bottom.
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A: The original iPhone
The original iPhone cost a whopping $600 (with a two-year contract, later reduced to $400) when it launched on June 29, 2007, but that didn't stop people from forming a quarter-mile-long line at Apple's flagship store in NYC to be the first to get it.
The device was revolutionary, of course, but many criticized its lack of 3G connectivity at the time.
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Q: What is the first iPhone model to use Lightning cables?
Before this, iPhones used larger 30-pin dock connectors.
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A: iPhone 5
The phone, released on Sept. 21, 2012, was also Apple's first to have a 4-inch screen.
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Q: Only one iPhone model comes in this shape and color. What is it?
Hint: It also has a 4-inch screen.
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A: iPhone SE
The iPhone SE, released on March 31, 2016, is based on the iPhone 5S design. Unlike the iPhone 5S, however, the iPhone SE is available in the Rose Gold color.
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Q: "Pardon me, sir. That phone in your hand, what is it?"
Certainly no other Apple smartphone looks quite like this one.
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