Forward facing camera no longer works

[Android Central Question]

Forward facing camera no longer works with the stock camera app.
The app opens to the rear facing camera only, there is no option on screen to switch cameras, and double-tapping the power button causes either;
a) the app to crash, and exit with "unfortunately the camera has stopped" (or similar)
b) phone vibrates, screen goes black and shows just the camera controls for a second, before going to rear camera.
or c) screen flashes black for a fraction of a second before reverting to rear camera.

When this first occurred, I opened the camera app as normal, set it to film and the app crashed- forcing me to restart the phone by holding the power button. After restarting the camera app was stuck in rear view.

Forward facing camera works perfectly fine when running the FLIR app/thermal camera- so its not the hardware. (FLIR uses the regular camera as an overlay)

Tried restarting the phone.
Force stopping the app
Clearing the camera app data and cache from settings.
Starting the phone in safe mode.

Haven't pulled the battery, and very reluctant to do so as this could interfere with the phone's waterproofing.

Phone is a Caterpillar S60 running Android 6.0.1

Advice on what to try next?

 

[mustang7757]

You can try safe mode and another camera app to see if it works , I'll leave a link to register if you like to ask more questions as a guest account you can't.https://forums.androidcentral.com/showthread.php?t=409154

 

[PhoePhoe]

Ok, made an account.

Looking back at my post- I could have wrote things a little better;

A few things I've tried (to no avail):
Restarting the phone.
Force stopping the app
Clearing the camera app data and cache from settings.
Starting the phone in safe mode.

 

[belodion]

It could be that the rear camera module has failed.

 

[mustang7757]

Ok, made an account.

Looking back at my post- I could have wrote things a little better;

A few things I've tried (to no avail):
Restarting the phone.
Force stopping the app
Clearing the camera app data and cache from settings.
Starting the phone in safe mode.

Hi, welcome!
Last thing before sending in for repair is try factory reset