Flickering back camera on iPhone 7

My back camera flickers when i'm using it on any application apart from the Camera application that comes with the phone. 😟

I am not too sure what the problem is, please help.

I have already tried powering off the phone, restarting it and deleting and re-downloading the apps and none of these have worked. My phone has not fallen either and it is 1 month old.

I really need my camera to work especially with Snapchat and Instagram. The problem is occurring in my iPhone 7.

Regards.