Sony Xperia Pro- finally a phone that you can use as an external monitor Share this article Along with the Alpha 1, Sony has also announced the Xperia Pro, which they claim is the world’s first smartphone with dedicated HDMI input. HDMI Input It is something people have been wanting to see for a long time, and finally, we have a phone with an HDMI input. If only Apple would do this with their phones. Being able to use a smartphone as a monitor makes a lot of sense. Yes, you have been able to monitor images before on a smartphone, but only wirelessly or through a myriad of conversion boxes.