Android does a great job at multitasking. Split-screen mode and picture-in-picture are great if you can manage more than one app at a time. But there are some limitations. For example, if you play a video and open a second video on the split screen, the first is paused. Fortunately, Samsung has a solution for it.
Especially considering how powerful the Galaxy Note 9 is with its 6GB of RAM, it should definitely be the multitasking king. Well, now it is undisputed. Samsung has just created a way to charge the multitasking on the Galaxy Note 9, as it is not possible on other Android devices.
Step 1: Install Good Lock 201
All Samsung devices come with two app stores, Google Play Store and Samsung Galaxy Apps. The latter includes apps designed specifically for Samsung Galaxy devices. One of the apps in this app store is Good Lock 2018, which you need to access.
You can get Good Lock by searching for it in your Galaxy Apps app. For more help with this aspect, see the following link for a complete tutorial on installing Good Lock 2018.
After installing Good Lock 2018, open the app and choose "MultiStar," an add-on (or extension) for Good Lock. Select "Install" to download and install the extension on your Galaxy Note 9.
Now go back to the Good Lock app and tap again on "MultiStar" – this time it will open the extension. Activate the button next to "Use multiple windows without pause".
With this optimization, two apps can stay active in split screen mode. If you share two apps that each show a video, game, or music, Android usually interrupts one and activates only one.
With This optimization, you can use MultiStar to work around this limit. Both apps can stay active so you can play two games at a time or play a game and video without having to reduce the video to a floating window. You can even watch two videos. That way, you and your friend can enjoy different videos on the same massive 6.4-inch screen.
The problem is that the audio from both videos plays the same source, your speakers or your headphones. To change this, we need the help of another great Samsung app.
Go to the Play Store and download the app developed by Samsung. SoundAssistant SoundAssistant is a free app that enhances various aspects of the audio performance of your Galaxy Note 9, including the number of steps between silent volume and maximum volume for media volume.
Step 5: Split Your Audio
Open SoundAssistant and select "Control Audio" Select "Separate App Sound", then select the option "App" on the bottom right. Select one of two applications you want to play Select "Audio Device" and choose where to output the sound. You must use a Bluetooth device because the sound can not be split between the speakers and the wired headphones. Because the Galaxy Note 9 uses Bluetooth 5, you can connect more than one set of Bluetooth headphones or speakers.
Now you need to make sure that the second device outputs the sound to another device. Swipe down the status bar to see the notification shadow. At the top of the shading are two options, "Audio Output" and the name of your Bluetooth device. Select "Audio output" and select either the second Bluetooth device (whether headphones or speakers) or your phone speakers.
Open the app that you have assigned as the first audio device in SoundAssistant. Make it the first app in split-screen mode and select the second app for video playback. Press Play on the video and then on the second video. Both videos should be played with any audio track that is directed to a different audio source.
Mostly you will probably never need this feature. But for those long car rides or plane rides, if your friend wants to enjoy the fantastic picture quality of your Galaxy Note 9 with some Bluetooth headphones and some apps, you can both enjoy another video.