1 First take it to the maintenance point for testing. It could have been a fall. The camera cables came loose!
2. Turn your iphone off, restart it, and turn it on.
3. Or it may be because there is a problem with the iphone system. 4. If you have tried all the above methods and still cannot turn on the camera, please contact Apple after-sales service. Have them help check the phone to see if it's a hardware failure