iOS 15.4 is finally open to upgrade in the anticipation, although iOS 15.4 contains a lot of new selling points, but as a new iOS version, consumers still have concerns. These concerns are mainly about how the performance experience of the iPhone in my hands will change after upgrading iOS 15.4.
A total of 8 mobile phones in this article have been upgraded to iOS15.4, and the performance comparison test has been carried out with the iOS 15.3.1 version, let's take a look at the test session and results.
The iPhone13 boots up faster after the upgrade, but the software opens slowly
In terms of boot speed, the iPhone 13 that upgrades iOS15.4 has a faster boot speed than the iPhone 13 of iOS15.3.1, and this difference is still very obvious. When the iPHONE 13 of iOS 15.4 completed the boot process, the iPhone 13 of iOS 15.3.1 was still in the white Apple state.
While iOS 15.4's iPhone 13 boots up faster, iOS 15.4's iPhone 13 doesn't perform well in terms of software opening speed. Several software were opened in a row, and the iPhone 13 of iOS 15.4 was not as good as the iPhone 13 of iOS 15.3.1 in terms of test speed. So in daily life, in terms of the experience of opening the software, the iPhone 13 that upgrades iOS 15.4 may feel a little slower than the original.
So iPhone 13 for iOS 15.4 is not recommended to upgrade.
After the iPhone12 upgrade, the boot speed and software opening speed are slow
In terms of boot speed, the iPHONE 12 of iOS15.4 is still slower than the iPhone 12 of iOS15.3.1, although the gap is not very large, but the fast boot speed of iOS 15.3.1 iPhone 12 is an indisputable fact.
Not only the boot speed, the software of iOS15.3.1 iPhone 12 is also faster than that of iOS 15.4 iPhone 12, when the software of iOS15.3.1 iPhone 12 has completed the open state, iOS15.4 iPhone 12 is still in the software open state.
So iPHONE 15.4 is not recommended for upgrade.
After the iPhone11 upgrade, it is also fast to boot, and the software is slow to open
The third phone to participate in the test is the iPhone 11, and from the results of the two test sessions, it can be seen that the iPhone 11 of iOS 15.3.1 is slower in terms of boot speed than the iPhone 11 of iOS 15.4. But in terms of the opening speed of the software "Twitter", the software opening speed of the iPhone 11 of iOS15.3.1 is much faster than that of the iPhone 11 of iOS 15.4.
Therefore, the iPhone 11 software that upgraded iOS15.4 is slower to open, and the upgrade is not recommended for the time being.
The iPhoneXR boots up quickly after the upgrade, but the software opens slowly
After the iPhoneXR upgraded iOS 15.4, it seems that there is the same phenomenon as the previous iPhones, that is, the boot speed looks very fast, much faster than the iPhone XR of iOS 15.3.1. However, in terms of the opening and loading speed of the game "Urban Parkour", the iPhone XR of iOS 15.4 is not as fast as the game opening speed of iPHONE XR of iOS15.3.1, which is very puzzling.
Therefore, the iPhone XR also does not recommend upgrading iOS 15.4.
After the iPhone8 upgrade, the boot speed is fast, and the software opening speed is slow
As an old iPhone from many years ago, the iPhone 8 also has a situation where the boot speed becomes very fast after upgrading iOS 15.4, but the software open speed becomes very slow. For example, in the speed of opening the "Apple Home" APP, the iPhone 8 software of iOS15.4 is not as fast as the iPhone 8 of iOS15.3.1.
The iPhone 8 is not recommended to upgrade to iOS 15.4.
After the iPhone7 upgrades iOS 15.4, the boot speed is fast, and the software opening speed is slow
The iPhone 7 was not spared after upgrading iOS 15.4, as a longer-on-market, older version of the iPhone, after upgrading iOS 15.4 boot speed became faster, but the software opening speed became slower. This shows that iOS 15.4 has improved in terms of boot speed optimization, but in terms of software opening speed, it is dragged down by some designs.
The iPhone 7 also does not recommend upgrading to iOS 15.4.
iPhone6s are also not spared, and after the iOS 15.4 upgrade, the boot speed and software opening speed are slow
iPhone6s directly after upgrading iOS 15.4, whether it is the boot speed or the software opening speed, is not as good as the iPHONE 6s of iOS 15.3.1.
As far as many Apple mobile phone nail households are concerned, iPhone6s is also not recommended to upgrade to iOS 15.4.
The iPhoneSE's performance after upgrading to iOS 15.4 was similarly poor
The performance of iPhoneSE after upgrading iOS 15.4 is also not good, whether it is the boot speed or the opening speed of the software, it is not as good as the iPhone SE of iOS 15.3.1, so iPhone SE is also not recommended to upgrade iOS 15.4.
brief summary
Judging from the software opening speed test results after multiple rounds and multiple iPhone upgrades to iOS 15.4, the boot speed of some iPhones has increased slightly, but the software opening speed is not as good as the iOS 15.3.1 version. Therefore, the overall performance of iOS 15.4 is not satisfactory, it is recommended not to upgrade for the time being, and wait for the next version to make a decision.