Gunnar Gervin wrote: > Is it possible to use debian on an android phone (Samsung A-40)?
In general: Phones designed for Android don't run other operating systems except variants of Android. On the other hand, you can install a Debian system in your existing Android device as an application or chroot environment, which gets you both the phone functionality of continuing to run Android and much of the Debian functionality via a terminal or even X11 applications. https://wiki.debian.org/ChrootOnAndroid -dsr-
