Hi, I have a Moto G phone and suddenly there's no sound during calls. The speaker works fine with everything else because the phone rings like usual and there's notification sounds and everything. The call mic also works because the caller can hear what I'm saying, I just can't hear them. I tried using the hands-free option but still doesn't work. The only thing that works is if I plug in the headphones. The phone has 2 sim cards and they both have this problem. I also tried downloading an app called SoundAbout but it still doesn't work. The android version is 6.0. Any ideas on how to fix this? Thanks.