At what decibel does Android Pie shows high volume warning? At what decibel does Android Pie shows high volume warning?
According to an article here by Kevin Arrows:

The reason Android phones [give high volume warning] is due to regulations set by the European Committee for Electrotechnical Standardization, which dictate that media playback devices must have a maximum output value of 85 dB – past 85 dB and the user must accept a warning.

So, the decibel limit might be 85 in Android Pie.