Dan Hitt wrote: > Does anybody have any experience along these lines, or advice?
there is nothing running debian out there AFAIK. The cheap phones without touch screen run something like KAI OS. There might be something around SailfishOS Community, that would be open source, but I don't remember exactly. AFAI Kai OS was the mozilla mobile project that got further developed by Google, but it is not Android, so you have limitations. The SM-J337A is an Android phone. If you are sick of Android, take a look at jolla.com and Sailfish OS. It still has some limitations compared to Android, but it can not be compared at all as it is completely different approach (IMO of course). I jumped on it after the N9, which was running debian, retired. It is effort to put Sailfish on it, but once there it is OK. Again there are some issues, so educate yourself if you go this way or the other.

