There are many problems with sound that we can have on mobile phones, although there is one that can cause us special confusion, this happens when the sound of an application does not work on Android. This can make us try various methods to recover the sound without any success, although to achieve this we are going to give you the keys that you must take into account.

We must remember that in addition to the native methods that we find in Android, the different layers of customization add other options that we will have to consider using. On any smartphone with Android 9 Pie onwards, we will be able to test these solutions and end up finding out where the problem or failure was that prevents us from hearing the sound of the applications on the mobile.
Is the sound glitch only in an app?
The first thing we must know to recognize is if the problem is only in one application or affects several. In case it is only one, we will have to try to fix this in a concrete way and leave the rest of the solutions for later. If they are all apps or several, we recommend you continue with the following options directly.

To fix the sound of a specific application , what we must do is enter Settings> Applications and choose it. Then we are going to clear the cache, the data and uninstall it. Then we proceed to install it again from the application store and once started we will accept all the permissions that are requested. Most of the time this failure is specific and just by doing this it is solved. Other times the problem depends on a mobile update, which we will enter in Settings> System and updates.
Check multimedia sound
Sometimes we get too complicated looking for a solution when really the only problem is in the multimedia sound. This is the main problem with sound in applications , where we only have to turn up the volume when something is playing or, going into Settings> Sounds and raising the multimedia soundbar.

Sound modes on Android
Among the audio options in Android we also have several modes that could be the trigger for an application not to sound. Multimedia sound is directly related to other sounds in certain customization layers and just by changing it we could fix the sound in Android applications . For this we must do two things.

First of all we touch on the volume buttons and check that it is not in sound or only vibration. Then we will enter Settings> Sound> Do not disturb and check how we have the option activated, because if it is activated you can also limit the sounds of applications, not just calls.
The sound button is to blame
Although there are not many terminals that have a sound button, some like those of the OnePlus firm have this option on the side. It is known as Alert Slider and could leave us without sound in applications , in calls and throughout the mobile. Just by changing the position we can see on the screen how we go from sound to vibration and everything is silenced.
