How to transfer video from a smartphone (with microUSB port) to an external portable mini-DISPLAY (AV, HDMI, VGA inputs)? I'm looking for the best way to transfer the video from a smartphone to an external monitor (used in cars, garages) to get a bigger picture.


I find this useful for dash cameras, and for entertainment with bigger display.


May I accomplish this with a OTG cable?

Your help is welcome.
If you are looking to mirror the display only and don't need touch inputs, I used something like this before to achieve the same via microUSB: Rocketfish MHL HDTV Adapter.  Likely you can find either an HDMI to miniDISPLAY adapter, or maybe a different cable that fits your needs (the one I've linked is the one I purchased and used myself so I can at least vouch for it's functionality; at that time, I believe I used it with a Samsung Note 4 - Android 4.4).

Additionally, I have seen wireless dongles that act as a receiver, but I have not personally tried these before.