Iphone XR speakerphone turns on randomly during call
During phone calls, the speakerphone will randomly cut on while the phone is up to my face. This is extremely deafening every single time this happens.
I'm running the iPhone XR with the most recent iOS update, but this is a problem I've had ever since I bought the XR a few months ago.
When I try googling how to disable the speakerphone entirely, I can only see questions where people are trying to enable, rather than disable it. I also read about a proximity sensor, but cannot figure out how to disable it either.
In short - how can I make sure my phone screen stays black during a call so the speakerphone doesn't activate while the headset is up to my ear?
iPhone XR, iOS 13