Mirror your SIII through on MHL-compatible devices, like HDTV, Pico-Projector. This adapter tip is designed to allow you to use your old MHL adapter on your new SIII.
Using this tip, you can convert the signal of MHL enabled handsets with 11 pin Micro USB port to your HDTV MHL adapter, simply attaches to HDTV MHL Adapter. This tip fixes on to the end of HDTV MHL Adapter and supports HD signals of up to 1080p.
You simply then need to connectivity to a home theater or monitor or you can connect it directly to your MHL enabled phone to create a HDMI docking station.
This adapter tip will work with only SIII and not backward compatible with SIII/other MHL smartphones, and fully tested with SIII, so you can be confident of perfect compatibility with your SIII.