[1] Of course, you can hook up most phones to a display, keyboard, mouse, but that blurring the lines a bit. A Samsung DeX device or future Pixel desktop mode device hooked up to peripherals is pretty much a desktop (Pixel will even support Linux apps in a VM).
Using a phone to write papers seems like an exercise in masochism, if better alternatives are available.
It's also possible that their peer group that does use laptops to write papers is doing far better in many ways.
- If it is an English class and you have to write about a personal experience, that would still take a lot of prompting.
- Other courses in psychology, political science, and journalism can pull from events too recent for writing subjects.
- Writing essays by hand in a tests setting or just as an exercise can solve two things. Now you would know a students writing style for the future and write without a computer.
- Using Google Docs to analyze revision history, not perfect by any means but helpful.