I bought my Nokia 3.1 two days ago and today, after installing all apps and updating the system etc. I connected my headphones. When I press play in any sound-playing app, right headphone starts to emmit a high-pitched tone until about 3 seconds after I press pause. Occasionally it happens even when I'm not playing any sounds. I tried plugging another pair of headphones and also the ones included with the phone. Being a tiny bit audiophillic, I can't bear it. Listening to music via a phone is very important to me because I travel a lot.
So if anyone knows a solution or whether I should send it back on warranty, please help.