Unable to play mp3 and other files on some devices

[Anke]

@zp-zpanda

but my work is only graded using .aia files

But what does an unreliable (buggy) emulator say about the quality of an app (AIA). Nothing. To evaluate the quality of an app, the installed app (APK) must look pretty and, above all, function on all relevant Android versions, period.

[zp-zpanda]

@Anke

Nothing. To evaluate the quality of an app, the installed app (APK) must look pretty and, above all, function on all relevant Android versions, period.

I respectfully agree with you.

@Anke

an unreliable (buggy) emulator

So I assume it's definitely neither App Inventor nor the Companion App's fault? If so, I'll mark this topic as resolved.