As of now, iOS 15 has undergone four major version updates, and iOS 15.5 is also on the way.
Overall, Xiaoguo feels that the iOS 15 experience is still quite good, and some of the newly launched features are very practical, such as mask unlocking and text scanning.

As we approach the June WWDC Developer Conference, we're about to say goodbye to iOS 15 and embrace the upcoming iOS 16.
Recently, according to the report of foreign media MacRumors, Apple will bring us more changes in iOS 16, mainly including notifications, health and music.
Among them, iOS 16 will optimize the notification reminder function and add collision detection function.
Collision detection is similar to the fall detection function on the Apple Watch, which can use accelerometers and gyroscopes to determine whether the user has fallen and trigger an emergency SOS call for help.
In addition, developers have previously found the interaction code with AR devices in iOS 16, so iOS 16 will most likely add support for Apple AR devices.
With the launch of iOS 16, we may be able to glimpse the tip of the iceberg of Apple's first AR device.
In terms of health applications, iOS 16 will optimize the sleep tracking function in health apps, and should be able to give more detailed analysis results and recommendations after monitoring users' sleep like the sleep monitoring apps on the market.
At the same time, Apple will also add drug management capabilities to health apps, which can scan pills and set a dosage cycle to remind users to take their medications on time.
In addition, the new features of the women's health category will also be one of the main features that will be launched in iOS 16, although it is not clear how it will be presented, but it will be a built-in function of the health app.
In addition to the above, Apple Music will also usher in a major change in iOS 16.
According to MacRumors, Apple Music will have a new user UI design and improve the "visual, auditory and tactile" experience, which should be in preparation for the upcoming Apple "classical music" app.
At the same time, the new classical music will also support lossless and spatial audio.
In terms of support models, according to the previous news from the outside world, iOS 16 will give up support for iPhone 6s, iPhone 6s Plus and the original iPhone SE.
After all, the iPhone 6s is already a model of 2015, and it is expected to be included in apple's list of obsolete products this year, and it is normal to no longer support iOS 16.
The "nail households" who are still insisting on iPhone 6s, the comment area is a claw.
In addition to iOS 16, some updates will be brought to watchOS and iPadOS at this year's WWDC.
According to MacRumors, iPadOS 16 will further optimize the multitasking interface and improve the user's work and learning efficiency.
At the same time, iPadOS 16 is expected to no longer support five model updates for iPad mini 4, iPad Air 2, iPad 5, and 9.7 / 12.9-inch iPad Pro.
Because the processors on these iPads are A8, A8X and A9, they can no longer keep up with the minimum operating requirements of iPadOS, so they will be eliminated.
In addition, watchOS 9 will also bring a wave of updates.
According to MacRuMors, Apple has focused the update on watchOS 9 on health monitoring.
watchOS 9 will optimize the monitoring of heart rate and atrial fibrillation, improve atrial fibrillation detection by calculating the "load", and can be used to measure the length of time a user has been in atrial fibrillation state for a period of time.
watchOS 9 will also provide more exercise type detection, and monitor more health indicators when users run, and more comprehensive monitoring of health data when users exercise.
In addition, watchOS 9 introduces low-power states that provide longer battery life when users use some features.
Previously, Guo Mingxi said that watchOS 9 may give up support for Apple Watch Series 3 because the watch's computing power will not be able to meet the requirements of the new system.
If the message is true, watchOS 9 will only support Apple Watch 4 and later models for upgrades.
The above is the software update that Apple may introduce in this WWDC.
This year's WWDC will be held in the early morning of June 7, Beijing time, let's look forward to the new system together.