John, first of all, thank you for trying to help. I wonder where you found the print options that you showed. When trying to print from my phone, I do get an option to use the main supply and to designate plain paper. I haven’t loaded any paper in the rear tray, but I have indicated that it would be filled with glossy photo paper when used. The main tray has been filled with plain paper, and works fine when printing from my desktop. But even after selecting the main tray and plain paper, when I select print on my phone, I can hear the printer trying to get photo paper from the rear, followed by a request to fill it for printing. This is my first Canon printer. I have used Epson printers for many years, but decided to give Canon a try because of the ink solution. I hope I haven’t made a bad choice.
