you can buy this Galaxy S III LCD Assembly from: http://www.etradesupply.com/oem-samsung-galaxy-s-iii-sgh-t999-lcd-screen-and-digitizer-assembly-with-front-housing.html
OEM Samsung Galaxy S III SGH-T999 LCD Screen and Digitizer Assembly with Front Housing
Size: 4.8 inches
Resolution: 1280×720 pixels
Technique Principle: LED
Origin: South Korea
Type of connector: Clip
Product Features & ETS Advantages
The resolution of Samsung Galaxy S III SGH-T999 reaches to 1280×720 pixels, and this Samsung T999 LCD & Digitizer Screen has the clearest and brightest show result in Samsung. As a major component of Samsung T999, the Galaxy S III SGH-T999 LCD & Digitizer Touch Panel is very important. Any bleeding, color spots or dead pixels on the screen may cause display problem. The SGH-T999 LCD Screen & Digitizer has a flex ribbon used to connect the motherboard and the screen. The ribbon functions as a data transmitter, without which, the Samsung T999 may not work properly. Therefore, many function problems of the Galaxy S III SGH-T999 LCD Screen and Digitizer Assembly can be caused by the flex ribbon problem.
ETrade Supply has established the ISO9001 certified QC procedure. For each Samsung Galaxy S III SGH-T999 LCD Screen and Digitizer Assembly with Front Housing, we apply strict cosmetic inspection and functionality test process before packaging and transportation. We also invent our own super-protective packaging method to give the maximum protection to the LCD Screen and Digitizer with Front Housing. Apart from this part, ETrade Supply also supplies other Samsung replacement parts.