My phone's front camera stopped working, out of the blue. I don't know what happened, I've tried rebooting the phone, pulling out the battery but still it won't work. I've tried to clear data and reboot the phone nothing changes. The icon to flip the camera is the but it remains in the back camera mode. All my other camera apps have the same problem, Snapchat and TikTok. Please help, I miss taking my selfies and posting