I read the ‘Modernizing the config.lua’ article. I have an iPhone 5 so I believe the screen resolution is 640x1136 pixels. So I loaded the image like this because on a 800x1200 content area, I need a background of 900x1425:
backGround=display.newImageRect(imageGroup, “bgImage.png”, 900, 1425)
It displayed ok on the simulator for the iPhone 5 window, but when I actually installed it on my iPhone 5 and ran it, it shows up as black bars on the top and bottom part. What am I doing wrong?