This is my diy smartphone based around the orange pi 3G iot development board.
-Orange pi 3G iot B dev board -The screen for the board -6x6 push button -Speaker(you need to modify the back of the phone since the speaker I used was taken from a laptop) -Microphone(you can desolder the one from the board) -Camera module -Phone battery -The 3D printed case for it -Some really small screws
new case: Smartphone/Case/ Old case: ferferite.com/projects
All of my projects are under the Attribution-NonCommercial-ShareAlike 4.0 International license. You can check for more info here: https://creativecommons.org/licenses/by-nc-sa/4.0/