LG is demonstrating its wireless Ultra HD transmission technology this week at Mobile World Congress. At the company's booth I got a chance to walk through a gaming demo on an Android device that was displaying at 1080p on the phone, upscaling to 4K on the TV. The technology works by connecting over Wi-Fi and using the Miracast peer-to-peer wireless screencast standard, allowing you to simply stream what you're seeing on the phone to a TV.
The streaming was fairly smooth, but panning did cause some frame rate drops occasionally. I noticed that LG is keeping the phone brightness low on its own Android devices for this demo to ensure they don't overheat, so it's clear this is an early demo. Nevertheless, if LG and others can bring this technology to the masses in 1080p Android phones, then we're looking at a future where a phone or tablet could truly be an all round gaming device that connects up to your TV.