If you have an MHL-compatible smartphone or tablet,
you can connect it to the projector using either an MHL cable or an
HDMI cable with a device-compatible MHL adapter. If you have a
device with a built-in MHL connector, plug it directly into the
connected devices may not charge when using an MHL adapter.
projector converts the digital audio signal sent from your video
source into a mono analog signal for the internal speaker or a
stereo analog signal if you are connecting to external