iphone 6s
I Have recently purchased the iPhone 6s from having the 5, all my data has transferred to the 6 and all that was good. Yet when I make a call I can't hear the caller unless I put on to loud speaker and then when I do they can not hear me very well, this is the same in receiving calls. I have checked that all volumes are turned up so I know it is not that. Can anyone help please?