I have no idea what IR blaster is bro. Can u tell me how to get it and use it please bro?
You can't get one. it is either built in to your phone or not. it is an IR (infrared light emitter). A GS3 does not have one. they only started using them on the S4 and the Note 3. On the Note3 it is a small round black looking plastic plug on the top end of the phone just to the right of the speaker. There is a high power IR LED behind that emits beams that can work like a remote for device and they can also be used to exchange data between to similar devices.
That being said by, if you mean by Galaxy 3 as in an S3 then you cannot use this app. On the other hand if you mean a Note 3 then you can use this app and it should require no special settings. Just follow the setup instructions in the app and you are good.
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