speaker problem . My phone appear to play on on one side

While the bottom of the phone looks like it has dual speakers, it actually doesn’t. The speaker is only located on the right side of the micro USB port. In fact, if you cover that up with your finger, you’ll notice there’s almost no sound coming out. The other side is for symmetrical purposes, but it also houses a microphone. Now the speaker isn’t bad, not by a long shot. It’s loud, but the sound can get a bit distorted, the higher the volume gets.

I thought as much, I checked it before researching and it appeared a dummy to me.

You should mention which mobile you are using.

Go to setting - sound and notification - then sound quality and effect and here you can find option for both speaker can work.