Secondary camera - definition
Secondary cameras are the front camera of a phone. Nowadays few brands directly call them as selfie camera. Usually it is permanently situated in the front side of a mobile device. Sometimes it may situate under display or there could be a motorized pop up camera in order to make the device a little bit lucrative. It is used for video calling feature or taking self portrait photo by the user himself/herself, user can take multiple group photos without any hassle at all.
