iOS 9 has problems displaying application notifications on the screen or playing the lock sounds and the sounds of certain notifications, they have existed since the beta versions released by the company Apple Lossless Audio CODEC (ALAC), in the summer of this year.
Then I noticed for the first time that certain notifications disappear from the LockScreen even if they are not accessed in a web interface, many of them disappear immediately after being displayed in the LockScreen and turning on the screen, without the user interacting with them in any way.
More than that, iOS 9 it does not play the iPhone, iPad or iPod Touch lock sound in some situations, while in others it displays the notifications received from certain applications, but does not play the sounds associated with them, all without anyone's intervention in any way.
iOS 9 – sound problems and notification display
These problems appear randomly for a very diverse range of applications, but also for the blocking system of our terminals, so that their reproduction is extremely difficult, so implicitly the solution is equally difficult for the developers.
I don't know what exactly is the basis of these problems with sounds and notifications iOS 9, but I imagine that some employees of the Apple company did not do their job that well according to the money they were paid, so that many users now have difficulties in using their devices.
Unfortunately, to the same extent, there is no solution for the problems with the sounds and notifications in iOS 9, not even a complete restore of the terminals and a manual reinstallation of the applications, so everything depends on the "mood" of the operating system.
Although various rumors said that Apple "wasted" a lot of time testing iOS 9 "deeply" to fix before the release any problems that might exist, it seems that the update is just as problematic as those released in the past, despite installation record.
