Hi Brian_P7,
Thank you so much for taking the time to respond. my friend and I are in different cities so it's a bit difficult. Also it is her first iPhone at the sweet age of 85, so trouble shooting is a bit challenging.
With regard to the article-- i have not yet tried opening the settings or cleaning the speaker. oddly though when the calleris on speaker the volume is adequate. when not on speaker however, it is very difficult to hear the callers voice because the 'output volume' is so low, despite the fact that the volume toggle on the side is turned up al the way up.
would welcome any further suggestions,
thank you again.
nora brooks