Q: when i answer my phone i can barely hear the caller, volume is turned up

Hi saintmary82,

If you are having a hard time hearing people through the receiver, take a look at the article below for some suggestions to get it sorted out. Start with cleaning the receiver and making sure your iPhone is up to date. If you continue to have issues, then you may want to contact Apple Support for further assistance.  

If you can't hear a person on a call or voicemail or if the sound quality is poor on iPhone

https://support.apple.com/en-us/HT203800

Take it easy,

-Norm G.