X1625226061105 , via OnePlus 9 , Jul 23, 2021 : Oneplus 9 is my first Oneplus phone ever. I like it and Oxygen OS very much, but there is one problem with it that really disturbs me. The thing is in built in any Android phone option of quick switching on the quiet vibration mode. User should press power button plus volume up button at the same time to activate it. The bad thing about it is that from time to time it happens in my pocket and I don't know about it. As a result I can lose several people's incoming calls. As you probably, unlike other Android phones, Oneplus has very convenient switch between silence, vibrate and quiet modes. Due to this fact function of quick switching on vibrate mode with the power button plus volume up button is not needed at all and is only annoying users. Please add an opportunity of switching off this function. Or maybe someone could tell me how to deal with this problem.