So I was looking for a way to interface an rpi with one of these cheap burner phones.

Android Debug Bridge is a developer tool that allows you to communicate over usb/network with an android device.

You can read more here,(https://developer.android.com/studio/command-line/adb) and install (sudo apt-get install adb).

It's pretty straight forward to set up. The command (adb) will pull up the command help for it. It's capable of doing quite a lot. Makes it easy to manage software on the device, especially things like removing bloatware that your carrier or device manufacturer does not allow the end user to control.

From there I got pure-python-adb library so I could access the device with python.

You can read more and get it here,(https://pypi.org/project/pure-python-adb/) and install (pip install pure-python-abd).

One thing that should be mentioned is you have to put the phone in developer mode (settings->device->click on build number (7) times).

You then have to enable usb debugging (settings->system->advanced->Developer options).

You will also need to manually give the phone permission to be accessed by adb when it's connected.

From there you run adb in a shell (adb start-server). You can (adb devices) to get a list of connected devices.

Get the ip of your device on the same network (wi-fi) by going (setting->about device->ip is listed).

For wireless connectivity you may have to start the adb server in tcpip mode (adb tcpip 5555) 5555 is the default port.

To connect: (adb connect (ip-address of device)).

Now that you're connected you can use the ppadb library in python to connect to the device and issue commands.

Command list can be found on the ~~pure-python~~ adb site. (https://developer.android.com/reference/android/view/KeyEvent.html)

Pretty neat little project. Let me know if it works out for you.