Wesley's Tool-Box

When you upgrade to the latest high-end device, you would expect it to perform faster than the last one. Thanks to the ever-progressing technology this has always been the case with the flagship iPhones, but the performance jump was not always consistent. Let's see how the seven generations of the iPhones stack up.

One thing to note is that I'm probably not missing much by not having the original iPhone or iPhone 3G here. Many of the tests are already flaky with iPhone 3GS or 4, largely due to not getting a newer OS. 3GS at least is barely holding on with an OS that got its last security patch in February 2014. iPhone 3G is considerably worse, with its last update in November 2010, nearly five years ago.

First up is the GeekBench 3, as shown in the video. 3GS was able to run the 3.1.1 version of the benchmark on iOS 6.1.6, while the 4 ran the 3.2.0 version on iOS 7.1.2. All the others were running the latest version at the time of the writing, 3.4.0, which supports iOS 9.0.2 installed on the devices.


Links to Results
[iPhone 3GS iPhone 4 iPhone 4S iPhone 5 iPhone 5S iPhone 6+ iPhone 6S+]

The results provide some interesting observations. There are two instances where the performance upgrade wasn't quite as significant as the other times: 3GS to 4, and 5S to 6 Plus. These were the times when the screen resolutions saw a significant jump from the predecessor - 360x480 to 640x960 and 640x1136 to 1242x2208 (downscaled to 1080x1920 on the display), respectively, which is about 4 times the pixel count. Much of the enhancements seemed to have sunk into supporting the higher display resolution.

In the other times, the performance increases approximately twofold each generation. At the transition from 4 to 4S, this was achieved purely by going dual-core. Since then the per-core performance was boosted. In the end, you can see an 11-fold improvement for going from the first dual-core iPhone (4S) to the latest (6S Plus).

I've been using an iPhone ever since it started going on sale in Korea back in December 2009, with iPhone 3GS. The original iPhone was not compatible with Korean mobile networks and at the time of the release of iPhone 3G, laws effectively prevented anyone from using foreign cellphones on the domestic networks other than in the form of roaming. People seeking to use the latest phones from abroad eventually succeeded in persuading the lawmakers to change the rules and paved the way for an official domestic launch of the iPhone as well.

I sought to get the latest iPhone as they were up for pre-order on the domestic carrier's website. So I was able to get mine usually on the first day of the Korean release day. This continued all the way up to iPhone 5, when I was invited to the carrier's launch event, as evidenced by a certain media photo. But wanting to get my hands on even quicker, I sought out the first-wave releases from overseas starting with 5S. And with that I started doing some in-depth reviews, too.

In this way, I went through seven generations of iPhone for the past six years. The only ones I skipped were either the lower-cost version (5C) or the smaller version (6 and 6S).


Since I never sold the iPhones, they always circulated within the family. And with the most recent upgrade cycle, all the older phones not in use were returned to me for a big reunion. Yes, I now had seven iPhones in my hands.

Luckily, all of the phones were in good working conditions in general, needing just a recharge or a change of battery to return it back to life. This prompted me to do a big comparison that let me see how far iPhones have come during all these years.

Chuseok (Korean thanksgiving) holiday week is closing, but the weather cleared up and I had the opportunity to snap some photos of the full moon. The $40 toy telescope acting as a makeshift zoom lens for iPhone 4's camera worked okay and reveals lots of details. Enjoy!