decent phone from past 5 years are excellent candidates for stuff like this, but i personally did not find much use besides basic stuff like an FTP server. for

decent phone from past 5 years are excellent candidates for stuff like this, but i personally did not find much use besides basic stuff like an FTP server. for content, i had a budget android phone whose battery swole within a year of use. opening it without proper tools to remove the battery was a chore for somebody as incompetent as me. but after that, trying to make it set-and-forget like a raspberry pi was a challenge and a half. you'd like the phone to start by itself when it loses and regains power from a wall adaptor. you'd also like the server/app to auto-launch on boot. these things are unfortunately not a given and the defragmented nature of android ecosystem makes it like a difficult endeavor for those without a lot of determination and free time. using termux seem to alleviate a lot of these issues but it hasn't personally worked for me when i last tried. but for light loads, this is something i hope becomes dumb-easy in the future. just docker with launch on boot would change the game for me.