Hello @TomitaYasushi, I hope you are doing well! I am implementing a similar functionality within our application. While our flashlight functionality performs as expected when the application is in the foreground, but it is not performing as expected when the application is in the background or terminated. @TomitaYasushi, have you come across any potential solutions or workarounds for this issue? I would greatly appreciate it if you could share any insights or approaches you may have applied. With gratitude and warm regards.