On my old phone I had an issue with the proximity sensor and front facing camera. This led me to holding my phone backwards to take photos and being unable to hang up phone calls.
I think I put up with this for a year and a half.
I did end up figuring out the issue with the proximity sensor but opening up my phone to reconnect the camera module was too much effort for me.
I had a car with a leaky radiator. I would fill it up with water in the morning and drive to work. If I didn’t it would start overheating. I don’t remember filling it again on the way back. Put up with that for weeks. I think I only got it fixed because the weather warmed up and it was no longer sufficient to cool it. Or maybe it was the same problem as the heating not working and after a few weeks of wearing multiple layers and getting absolutely frozen I finally got it fixed. They may have been two separate issues/occasions, this was around 2003.