How to solve automatic pop up volume icon on OppO F3?

[Android Central Question]

i have tried few things from youtube but there is no solution for oppo f3

 

[B. Diddy]

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[mustang7757]

Where do you see this pop up?

 

[Laura Knotek]

You should be able to increase or decrease the volume when you're using the YouTube app by pressing the up or down buttons on your device.