When your phone’s camera won’t open, it’s often due to app conflicts, limited storage, or software glitches. First, try restarting your phone to clear temporary software issues. If the problem persists, check if any other apps are using the camera in the background, as this can prevent the main camera app from launching. You may need to force-stop any recent apps that access the camera. Clearing the cache for the camera app in settings can also resolve minor glitches. Insufficient storage space can hinder camera operation, so delete unused files or transfer photos to free up space. If none of these work, a factory reset may be necessary to eliminate software conflicts. If the issue continues, it could indicate a hardware problem requiring professional repair.