I have an IPhone 6 and have upgraded to IOS9.

[iMore Question]

When I activate siri, I can see the voice bar indicating her speech, but I cannot hear her. What can I do to fix this?

 

[Jaguarr40]

Try turning the volume control rocker buttons up as it has it's own sound control. Try also turning off Siri, Then back on but I would try the volume control first.