Oh that's a cool coincidence, I was just watching a video of someone coding a game without a laptop. In their case it's a VR game on a VR headset (based on Android), using Godot.
It's not really related I know but it's neat how all those not-strictly-computers are getting more useful!
Edit: forgot the video link! It's https://youtu.be/4ZAzi-4Ko3g?feature=shared