All Nebula projectors are equipped with an HDMI port, so you are able to connect an HDMI output device (e.g. smartphone, computer, DVD player, etc.) to the projector using an HDMI cable.

If there is no signal or the signal is unstable when connecting an HDMI output device to your projector, please try the following steps to verify if the issue can be resolved:

1. Try unplugging and plugging in the HDMI cable, or use a different HDMI cable to see if that resolves the issue.
2. Connect your projector to another device using the same HDMI cable to determine if the problem is with the projector or the device.
3. Adjust the HDMI output resolution and refresh rate of the connected device to match your projector's specs.
4. If the issue persists, disconnect from your projector and connect your device to a TV via HDMI to determine if the problem is with the device or the projector.