Calls not working on OnePlus 8pro

Is anyone having issues paring earphones with OnePlus 8pro? I got them to work after alot of hassel . Now everything works but when I call someone via network its goes dead silent I can’t hear anything neither the person on the other end . If I am voice calling through whatapp it works even video calling Mike works fine but during normal call it just won’t work. Also I tried paring with my brother’s 6t I couldn’t get both to work and same goes for the mike . someone please help :sob::sob::sob:

Hi @Nacho_Dragon

Please tell us what the model of your earphones is, so we can help you further.