Chosen Solution
So, the power and volume buttons on my OnePlus 3 started feeling a little weird lately and slowly one by one all just kind of sunk inside the body of the phone and stopped working altogether. So, I opened the phone and found that the actual internal buttons were fine and working, but the rubber thingy that pushes those buttons from outside and worn out and was unusable. So, does anyone know if those rubber thingys can be replaced or is there any diy hack to make them work or do I need to get the whole back cover replaced?
The same thing happened to me a few months ago. The power button went first, and then the bottom volume button some weeks later. I changed my phone battery today and discovered the little plastic bits had basically degraded and crumbled. So now even though my phone is charged up, I can’t get it to turn on and I haven’t seen anything on any forums about what to do about this specific problem. You posted this since 2019, have you had any luck since then? Buying a new phone is not an option for me.