[Samsung Galaxy Tab S3 Questions & Answers] pachi24igger:
Miracast, WiDi, and Microsoft's Wireless Display Adaptor

Hey! So I came across this post as I myself was considering buying a Tab S3 to replace my Tab S2, and I also have the exact same needs you describe. I have been using Miracast to avoid using long cables for presentations etc. and the best alternative to an HDMI/MHL cable adaptor (apparently not supported on the Tab S3) is the "Microsoft Wireless Display Adaptor", there are two versions of this, the "V1" and the "V2", I have used both and they are both great, the only major difference is that the newer "V2" version is half a second faster on input lag/delay but in both of these it is under a second so perfect for streaming up to 1080p videos with audio, presentations, etc. (maybe not for gaming but I don't game). The only issue is that when you cast a screen you cannot change the aspect ratio at all, but that is an Android issue and not Samsung's as it happens with all devices, given the Tab S2 and S3 are 4:3 screen ration they will always cast in that ratio which will look slightly odd on 16:9 TV's and projectors. However, for video casting there is a way around this, if once you are casting the screen (you'll see it as 4:3) and you decide to play a 16:9 video on the tab using either the built in Samsung Video Player or VLC it will suddenly turn your tablets screen black and cast the video in true 16:9 aspect ratio only on the Screen you are mirroring to (whether it is the Microsoft adaptor or an integrated Miracast one on the TV), it will still pop up the video controls on your tablet's black screen when you touch it but not the video, for me this is a near perfect solution, I'd rather the Android operating system would adapt the screen ratio with Miracast but I can understand why it is difficult to do as on one of the screens it would have to look distorted, when I do need the 16:9 aspect ratio I use my phone (Galaxy S7). The bonus of the Microsoft Display Adaptor is that it will also support WiDi which is Intel's Wireless Display technology very similar if not the same as Miracast but for Windows based laptops with Intel Hardware, both an Intel processor and an Intel WiFi Card. This works in Windows 7 if you download the software from Intel and is already integrated into Windows 10 on the tools on the right hand corner when you click on "connect" it will already show you the Microsoft Adaptor as a screen to connect to, the advantage on windows is that you can actually extend the wireless display to be a second monitor and drag what you need to the second screen whilst having other things happening on your laptop's screen. I know it is a long explanation, but I have been chasing this technology for the last 3 or 4 years as a way to get rid of cables and it works quite well by simply purchasing this little adaptor for my laptop, tablet, and phone, as long as all of these support either Intel's Wireless Display or Miracast.

Hope this helps

---------- Post added at 01:09 PM ---------- Previous post was at 12:53 PM ----------

Hey! So I came across this post as I myself was considering buying a Tab S3 to replace my Tab S2, and I also have the exact same needs you describe. I have been using Miracast to avoid using long cables for presentations etc. and the best alternative to an HDMI/MHL cable adaptor (apparently not supported on the Tab S3) is the "Microsoft Wireless Display Adaptor", there are two versions of this, the "V1" and the "V2", I have used both and they are both great, the only major difference is that the newer "V2" version is half a second faster on input lag/delay but in both of these it is under a second so perfect for streaming up to 1080p videos with audio, presentations, etc. (maybe not for gaming but I don't game). The only issue is that when you cast a screen you cannot change the aspect ratio at all, but that is an Android issue and not Samsung's as it happens with all devices, given the Tab S2 and S3 are 4:3 screen ration they will always cast in that ratio which will look slightly odd on 16:9 TV's and projectors. However, for video casting there is a way around this, if once you are casting the screen (you'll see it as 4:3) and you decide to play a 16:9 video on the tab using either the built in Samsung Video Player or VLC it will suddenly turn your tablets screen black and cast the video in true 16:9 aspect ratio only on the Screen you are mirroring to (whether it is the Microsoft adaptor or an integrated Miracast one on the TV), it will still pop up the video controls on your tablet's black screen when you touch it but not the video, for me this is a near perfect solution, I'd rather the Android operating system would adapt the screen ratio with Miracast but I can understand why it is difficult to do as on one of the screens it would have to look distorted, when I do need the 16:9 aspect ratio I use my phone (Galaxy S7). The bonus of the Microsoft Display Adaptor is that it will also support WiDi which is Intel's Wireless Display technology very similar if not the same as Miracast but for Windows based laptops with Intel Hardware, both an Intel processor and an Intel WiFi Card. This works in Windows 7 if you download the software from Intel and is already integrated into Windows 10 on the tools on the right hand corner when you click on "connect" it will already show you the Microsoft Adaptor as a screen to connect to, the advantage on windows is that you can actually extend the wireless display to be a second monitor and drag what you need to the second screen whilst having other things happening on your laptop's screen. I know it is a long explanation, but I have been chasing this technology for the last 3 or 4 years as a way to get rid of cables and it works quite well by simply purchasing this little adaptor for my laptop, tablet, and phone, as long as all of these support either Intel's Wireless Display or Miracast.

Hope this helps