loudspeaker during call

[dim55]

Hello,

I use often the loudspeaker when I'm making a call. I noticed that although xperia x has two loudspeaker, they are not activated both during a call. So I wonder whether there is an option to allow both loudpeakers to be activated during a call, although it's not stereo source.

[najodleglejszy]

I've seen a response from Xperia staff in another thread saying that the phone isn't using both speakers in loudspeaker mode on purpose, in order to avoid unwanted echo effect during the call.