8 iPhones test iOS 15.4 running speed: after the upgrade also perform hip pull?

iOS 15.4 was released in the expectations of the public, and the biggest highlight of the new features added this time is the support for wearing masks and unlocking the face recognition function. So in the actual speed, how does each iPhone perform after upgrading? Foreign technology experts will be the old iPhone SE, iPhone6S, iPhone7, iPhone8, iPhoneXR, iPhone11, iPhone12, iPhone13 and other 8 models of running speed results, the results are not satisfactory, even the latest release of the iPhone 13 after the upgrade of the speed has become slower.

iPhoneSE：

The iPhone SE released in 2016 still supports the iOS 15.4 upgrade, and it is important to know that this series has been released for three generations in the past 6 years. The original iPhone SE compared with iOS 15.3.1 after upgrading iOS 15.4, and the results were impressive, whether running system software or system software, the result was that iOS 15.4 was slightly slower. Originally the old model is not as fast as before, and now it is slower after the upgrade, do you dare to upgrade the iPhone SE in your hand?

But surprisingly, after the old iPhone SE upgraded to iOS 15.4, it tested the single-core and multi-core running scores of the A9 processor, and the results were slightly up, both up 4 points. So why is it running slower?

iPhone6S：

iPhone6S as a loyal user of Apple's nail household, after upgrading iOS 15.4, the system software running speed is almost the same as iOS 15.3.1, whether it is opened in the album or the map, almost at the same time. But when running third-party applications, when opening small software such as youtube and subway parkour, iOS 15.3.1 is slightly faster. This performance is much better than the old iPhone SE, at least without a comprehensive slowdown.

When testing the processor of the iPhone6S, the results are almost the same as the software speed. After upgrading iOS 15.4, the processor running score of iPhone6S has dropped slightly, and the single-core running score has not dropped much, but the multi-core running score has dropped by more than 20 points.

iPhone7：

The iPhone 7 after upgrading iOS 15.4 also performed hip-pulling, although in terms of system software testing, it was almost tied with iOS 15.3.1, and this result was similar to that of the iPhone 6S. However, in terms of running third-party software, it is almost in a state of overall backwardness, especially when opening a small game, the gap visible to the naked eye, and the running speed is seriously reduced.

The reason can be found in the processor running score, after the iPhone7 upgrade, the single-core running score dropped by 71 points, while the multi-core running score dropped by 64 points. I didn't expect the performance to drop so much after the upgrade, this result is too surprising, no wonder the speed of running will pull the crotch.

iPhone8：

The iPhone8 is much better than the previous models, and the system software is still as fast as ever. However, when competing with iOS15.3.1 with third-party applications, when opening foreign social software, whether it is pictures or text loading, iOS 15.4 is almost in a backward state. Fortunately, only two softwares have dropped in speed, and other third-party applications are still very fast, tied with iOS 15.3.1.

The iPhone8 in the upgraded processor running score test results are also not satisfactory, single-core running score rose by 1 point, but multi-core running score fell by more than 200 points, which means that when multitasking is turned on, the iPhone8's response speed will be slower.

iPhoneXR：

Equally disappointing is the iPhone XR, where after upgrading iOS 15.4, the speed of opening third-party applications became slow. In the test, when the tubing was opened, you could see that iOS 15.3.1 was very fast, while iOS 15.4 was about 3 seconds behind, and I didn't expect the upgrade to make the running speed gap so large.

In the processor running score test, the iPhone XR that upgraded iOS15.4, whether it is a single-core or multi-core running score, has declined, it seems that iOS 15.4 has made the overall performance of the model lower, can you accept such a result?

iPhone11：

The performance of the iPhone 11 is even more disappointing, this is still a model released 2 years ago, did not expect to upgrade iOS 15.4, even some system software running slower. In comparison with the iOS 15.3.1 test, the weather and mapping software run by iOS 15.4 was almost 1 second slower. If you run third-party application software, the gap can be imagined.

Testing the iPhone 11 processor running score is also speechless, don't look at the upgraded A13 processor single-core running score has not dropped too much, but the multi-core score has dropped particularly seriously. Once again, the fact that upgrading iOS 15.4 performance is degrading. And the iPhone11 does not yet support wearing a mask to unlock 3D face recognition.

iPhone12：

When the iPhone 12 upgraded iOS 15.4, it supported wearing a mask to unlock 3D face recognition, but the running speed also decreased slightly. Only this time it is good, compared with the previous models of the overall decline, iPhone 12 running iOS15.4 only when opening the anonymous social software, will be slower than iOS 15.3.1 half a beat, the gap is not very large, only slow down the lens can be found.

In the iPhone12 test A14 processor running score, the single-core and multi-core running scores have dropped, and even if the running speed has not become slower, it cannot change the fact that the performance has declined.

iPhone13：

Compared with the previous 7 old iPhones, the iPhone 13, as the latest model at present, after upgrading iOS 15.4, runs at almost the same speed as iOS 15.3.1. Whether it's system software or third-party applications, loading images and text is very smooth. But the running speed has not improved overall, in fact, the performance of the iPhone13 is also very crotch-pulling, but it is slightly better than the previous models.

Looking at the A15 chip running score equipped with the iPhone 13, the single-core running score is increased by 11 points, and the multi-core running score is increased by 1 point. Even if it is tied with the running speed test of iOS 15.3.1, this cannot hide the shortcomings exposed by iOS 15.4.

Summary: If you care about running speed, then these 8 iPhones do not upgrade iOS 15.4. If you are interested in wearing a mask to unlock the 3D face recognition function, then users of iPhone 12 and 13 may wish to upgrade, after all, only these two series of iPhones support this function. Dear officials and friends, after you upgrade iOS 15.4, the iPhone in your hand has slowed down, welcome to express in the comment area!