Mobile phone cameras are divided into rear cameras (large cameras) and front cameras (small cameras).
The front camera cannot be replaced alone, it needs to be replaced together with the front camera cable assembly. The functions included in the front camera cable assembly are: front camera, hands-free call (Siri voice), light sensor (automatic brightness adjustment), distance sensor (normal call black screen), if there is a problem with the above functions or the screen is black when switching to the front camera, you can solve it by replacing the front camera (if it is caused by a motherboard failure, replacing the front camera cable assembly cannot solve it).