The iPhone face-off: Watch every model in a speed test [Video]

The iPhone 5s is the fastest smartphone Apple has built so far -- unless you’re trying to shut down the device.

A video posted this past weekend shows how every version of the iPhone compares in a speed test. Surprisingly, some of the older devices still do well when it comes to certain tasks.

If you’re having trouble counting, there are eight different iPhone models: the 5s, 5c, 5, 4s, 4, 3GS, 3G and the original 2007 model.

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The first test is a shutdown test, which measures how quickly each device turns off, and this is where the surprise comes in, according to the video by EverythingApplePro.

The original model, the 3G, 3GS and the 4 all shut off much faster than the newer iPhone devices. The difference is a handful of noticeable seconds, and it’s likely related to the type of software each device is running. The newer models use iOS 7 while the older models -- besides the iPhone 4 -- are stuck on older versions of Apple’s mobile operating system. It seems iOS 7 likes to take its sweet time when it comes to turning off.

The next test measures how quickly each model turns on. The winner here is the 5s followed by the 5, 5c and the 4s. The original iPhone surprisingly booted up faster than the 4, 3GS and 3G versions.

The third test shows how quickly each iPhone loads up websites, and in this test, the iPhone 5s is the clear winner, loading up Apple.com and Reddit.com in a flash. However, it is quickly followed by the 5c, 5 and the 4s. Much later, the older models finally start to boot up the website.

Check out the video and see all eight iPhones face off.

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