On May 17, Apple pushed the official version update of iOS 15.5, upgraded the baseband to version 1.61.00 to improve the signal performance of the iPhone, and fixed the problem that the home application automation program could not accurately identify the location information in the new version. On the surface, iOS 15.5 does not seem to have amazing new features. Many people are hesitant to update, but foreign media have discovered the hidden features of iOS 15.5.
First of all, in terms of security, iOS 15.5 has fixed more than 20 bugs, most of which can be triggered remotely, and some of them can be triggered through malicious websites. Although no one has exploited these vulnerabilities, for the time being, it is better to take precautions than to make amends.
One of the reasons why many people are hesitant is that they are worried that the update will do more harm than good, and foreign media tests have shown that the battery life after the update will be longer (at least not worse than before).
In tests of performance and overall usability, the iPhone was a little more responsive after the update (though the changes were minor). In benchmarks, iOS 15.5 appears to be on par with iOS 15.4.1.
It is worth mentioning that Apple pushed the iOS 15.6 developer preview beta update on May 19, and developers need to use Xcode 13.3.1 to develop this version.