Andronk, Jul 20, 2019 : My OP7 has a problem with playing any short sounds. Sometimes they sound glitchy or distorted, while at other times they sound normal. It seems to occur randomly. As well as affecting notification sounds for text messages, WhatsApp etc, it's also the screen lock and unlock sounds, camera shutter, clicking "like" on Facebook... Anything that pays a short sound. I have updated to 9.5.7 and still facing the issue.