Cute design. I like it. I tried to run your original file and find out that it fit my small screen. But when I copy your marked phone code to my project, it has bigger phone size. How to fix this? I'm still new at Ren'py.
if youre changing the size you have to edit the image file for the phone to either make it bigger or smaller to suit what you need. and change the numbers in the code to match the new size
I don't understand with the screen properties so I changed my whole project resolution to 1920*1080 lol and it's works fine with yours. Thank you. Your project really helpful for my school project.