Changing ringer volume randomly?

[CosMiiK]

Randomly throughout the day, my phone changes the ringer volume from vibrate to the lowest sound tick on the ringer. This happens at least 5 times per day (usually more) as long as the privacy switch isn't set to a silent mode. This happens on OOS, lineage, RR, etc. This happens to both me and a friend all the time. He bought his 3T a few weeks after I got mine, we're both bootloader unlocked, have different versions of TWRP, he runs OOS and I run Sultan's lineage build normally. Basically we're both extremely annoyed at this little issue. We cannot figure out why it's happening but it happens to both of us regardless of ROM or firmware version. This has to be a software issue, what are the chances that we both got devices with a hardware issue. I have a 64gb gray, he has a 128gb black, purchased about a month apart, no way we have phones from the same batch. Any help to fix this annoying little issue would be greatly appreciated.

 

[redpoint73]

Is you phone in your pocket when it happens? Any chance it can be something as simple as the power & vol rocker being pressed when the phone is in your pocket? Reason I say power & vol rocker, is that both would need to be pressed for the vol to change (pressing vol up/down when screen is off will normally do nothing).

Hasn't happened to me on this phone. But on my old M8, once in a while when crouching down (with phone in my pocket), the power button would be depressed long enough to reboot the phone. Although the power button was on the top of that phone (and easier to accidentally depress, I would think). I was starting to think there was some hardware/software fault making the phone reboot; before I realized it was just me depressing the button on accident.

 

[CosMiiK]

Is you phone in your pocket when it happens? Any chance it can be something as simple as the power & vol rocker being pressed when the phone is in your pocket? Reason I say power & vol rocker, is that both would need to be pressed for the vol to change (pressing vol up/down when screen is off will normally do nothing).

Hasn't happened to me on this phone. But on my old M8, once in a while when crouching down (with phone in my pocket), the power button would be depressed long enough to reboot the phone. Although the power button was on the top of that phone (and easier to accidentally depress, I would think). I was starting to think there was some hardware/software fault making the phone reboot; before I realized it was just me depressing the button on accident.

It happens even after sitting still on my desk after an hour of not being touched. It's been going on ever since I've had the phone. Definitely not accidental presses

 

[moSess]

It happens even after sitting still on my desk after an hour of not being touched. It's been going on ever since I've had the phone. Definitely not accidental presses

I know that with some custom ROMS, it works in sets of three.

Alarms/priority/all notifications

Total silence/vibrate/ring

At least it's what I've noticed. And only with a few custom ROMS.

Hope this helps.