Play sound through earpiece speaker iphone How can i make my iPhone 7 play all sound through the earpiece?

I want to listen to music privately without headphones thought this would be an easy way to do it, pointing bottom of phone low-volume to head is awkward and doesn't work v well.
This is currently not possible as the earpiece speaker is only for phone calls. Your choice is the main speaker or a headset.
From this discussion:

As far as I know this is not an option.
The earpiece receiver is for phone calls, it's not a &quot;private speaker&quot;. Your choices are the iPhones main speaker or a headset.

You can request Apple to add this functionality here.