The Galaxy S3 is the consumer term. The model number is "GT-i9300". So if you have a GS3, you have a GT-i9300 and you're good to go.
BUT note that the S3 has a unique 11 pin port so you'll need a 11-to-5 pin Micro USB adapter to use this 5 pin MHL... and just like Apple, only Samsung makes the adapter. Luckily though, it's been out for awhile, so the price is now about 9 bucks. Here's a link: http://www.amazon.com/Original-Sa...=amaz98-20
how do u know if u have the Galaxy S III (GT-i9300)
If you got the international version (unlocked) then you have GT-i9300. You can find your model number by going to amazon.com and search for the phone and there will be Item Model Number listed in product details. Not sure if you can reboot your phone then it shows that information on startup screen or you can try to check under Settings -> About Phone.
I think as far as this adaptor is concerned compatibility will not differ if you have international or US version. Last time I heard this wasn't compatible with any Galaxy SIII version without buying another micro USB adaptor as there was difference in number of pins. So in short you might need two adaptors to make it work on Galaxy SIII.
"* The Samsung Galaxy S III requires the use of an 11-to-5 pin Micro USB adapter to use a standard 5-pin MHL adapter, such as this one. Currently only Samsung carries the adapter, but Monoprice will carry one shortly."
It lists the SGS3 as compatible but it then says that it isn't. Very confusing. It doesn't work.
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