Hi,
I am also facing this problem of the upper speaker that doesn't work and this with the latest version 17.1810.1911.110 and this is really upseting!!
Asus is asking me to reset the phone and that works but I have done it already and the problem appears again..
Is there any other action to be done to solve the problem?
I am really not please with this BIG problem as I can't use it as a standard telephone... ?