The intention of using a dead Android mobile display as an output display for a Raspberry Pi 3 can be both technically challenging and highly possible, depending on the component failures in the Android device. Whether the touchscreen is non-functional while other hardware is still in working condition, there are a few potential methods to achieve this repurposing goal. Below are detailed steps and approaches to consider:

Using VNC or Remote Desktop

Step 1. Configuring the Raspberry Pi

First, ensure your Raspberry Pi is up to date:

bashsudo apt updatesudo apt upgrade

Next, install a VNC server:

sudo apt install realvnc-vnc-server

Enable the VNC server through the Raspberry Pi configuration utility:

sudo raspi-config

Go to Interfacing Options VNC and enable it. Note the Raspberry Pi's IP address using hostname -I.

Step 2. Configuring the Android Device

Download and install a VNC viewer app, such as VNC Viewer or similar, from the Play Store. Open the VNC viewer and connect to the Raspberry Pi using its IP address.

Using an HDMI Adapter

While the display panel is functional, but the Android OS is not, you may consider using this device directly. This approach, however, demands a significant amount of technical expertise. Here’s a simplified breakdown:

Disassemble the Android Device Find the Display Connector

Locate the type of connector, which is often MIPI DSI for mobile displays.

Use a Driver Board

You need to purchase a compatible driver board that can convert the Raspberry Pi’s HDMI output to the display’s input. This involves soldering and an understanding of electronics. Please proceed with caution as it requires specialized hardware and knowledge.

Using a USB Display Adapter

If the Android device has USB capabilities, you can explore using it as a secondary display. This generally requires the device to be somewhat operational. Consider apps like Spacedesk, which allow USB tethering as a workaround.

Dedicated Software Solutions

There are specific apps designed to make your Android device work as a display. Some popular options are Splashtop and Duet Display. However, these apps typically necessitate that the Android device be in a somewhat functional state.

Conclusion

While it is theoretically possible to repurpose a dead Android mobile display for a Raspberry Pi 3, it may not be practical without significant technical expertise and hardware modifications. If the device is entirely non-functional, your best option is likely to use it for parts or explore other display options such as using a traditional monitor or an HDMI-compatible display.