Why isn't my camera changing the icon on my Tecno f7 showing?

[AC Question]

My camera changing icon on Tecno f7 not showing

The camera on my Tecno F7 is only showing the front camera and can not change it to the rear camera as the icon for changing has disappeared

 

[B. Diddy]

Welcome to Android Central! Does this persist after a reboot? If so, then try booting into Safe Mode, which temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK.

If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.