How do I change the call from my left earphone to right? How do I change the call from my left earphone to my right one? I have trouble hearing in my left ear so I would prefer for the person whose on call for their voice to be coming from my right earphone, my phone is a Samsung s7
Go to Settings --> Accessibility. Then tap Hearing. Towards the bottom, you will find an option for Mono Output, switch that ON. Then you can drop the earphone from one ear.

There is also a left-right sound balance. You can shift the slider to the ear you prefer.

Here is a guide to using the hearing accessibility settings on your phone:

https://www.androidcentral.com/how-use-hearing-accessibility-options-galaxy-s7