Answer to "Data transfer through cable"Connect it to your PC. Then, once you have done that go into the notifications section on your phone. You’ll see something about the USB connection in the form of a notification. Tap it and pick the setting File Transfer.
Answer to "Camera does not work after light water damage":O Someone else from devRant? Hello! Try the test mode first by going to the calculator app (must be original one) and typing: ‘.12345+=‘. If it opens with a screen that has the option single test on it, press that and navigate to the camera. Otherwise, I’m not very sure. If it really does not work in that app, you should probably get your camera replaced.
Answer to "Could my Dell Inspiron 15 5565 function with out its battery?"Yeah! Running a laptop on AC power only has been done. Just take care of the battery (charge and discharge it once in a small while, protect it from dust collecting etc) if you plan on trying to use the battery again.
Answer to "Can I use any type replacement screen?"No. Replacement screens for different devices have their differences, like the cable, the amount of pins on the cable and the size. You need one for your device.