You can already scan books on your iPhone with the right apps. This handmade book scanning frame can make your life a whole lot easier. It is made with PLA, wood, and glass and lets you open your books at a 90-degree angle to scan them flat. The lower part of the phone support has 2 pieces of glass to press down the pages.
The book scanning frame is available in small to large sizes to accommodate books up to 11×14″ sizes. The double-degree phone arm supports 90 & 100-degree scans. You can find this item on Etsy.[where to get it]