1. Check your audio settings and make sure the balance is centered

– Open the audio settings of your phone options and check the balance settings

2. Check and make sure the audio is not being shared

– On the audio settings page, look for an option that has to do with sharing audio and make sure it is not engaged or selected

3. Remove any audio wires and check the hardware

– Make sure that the wired headphones are connected correctly to the audio jack and try to replace any audio wires that might be damaged

4. Perform a reset on the audio settings

– Perform a reset on the audio settings, this should restore the phone back to its default settings