I'm using a Cannon DSLR EOS 600D so not sure if phone will be better. However, will give it a try. Gonna be tomorrow now as I've had a rather hectic day.
Set the board on a table next to a shoebox (or similar sized box). Set the phone on the box but overhanging to it can take a photo of the board. Use the time delay on your camera so you're not touching the phone when the shutter releases. Also, use the flash and touch the screen to tell the phone to focus on your PCB. Then trigger the shutter and wait for the photo.