Volume

Hi maddynj,

Welcome to the Apple Community.

Seems you may need to adjust the volume while actually on the call.

Apple support's article (link below) can guide you:

While on a call on iPhone – Apple Support

All the best :-)

maddynj Said:

"Volume: I have trouble hearing the conversation during a phone call. How do I increase the volume on iPhone 13."

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Is the Speakerphone an Option?:

If so, use your speakerphone. See if that works.