Screen permanently black with broken proximity sensor and Proximity Sensor Accelerometer App My phone's proximity sensor is broken and constantly signals "covered". The screen turns black when I'm called.

I installed an app Proximity Sensor Accelerometer to solve this and played around with the features.

Now my screen is permanently black.

How can I disable or uninstall the app? Maybe remotely? Maybe install another app remotely to fix this?

I don't have usb debugging enabled on the phone. Plugging in the charger doesn't reactivate the screen.

Device: Sony Xperia Z2, not sure of Android version
The app settings are reset after the phone is restarted so I did this: power button + volume up. 

Press it at the same time for a few seconds to turn off the screen without needing to use touch. Then start the phone and the app is reset.