Connect your Samsung Galaxy S9 to the PC through the USB port.

How To Connect Your Galaxy S9 To a Computer However, it is different for those using Apple’s Mac computers because now you won’t need the Samsung USB drivers but you may have to download and run the Android File Transfer. Doing so will let you effectively mirror the contents of your Samsung Galaxy S9 or Samsung Galaxy S9 Plus on your TV.If you are using a Windows PC for instance, you need to use appropriate USB drivers for Samsung Galaxy S9. If you are using an older TV with an analog connection, it would be better if you get an HDMI to composite adapter. You would know it’s the right one when the contents of your phone screen appear on the TV.

Lastly, find the right HDMI channel on your TV.

After plugging it in, connect your MHL adapter to your TV using a standard HDMI cable.

Once you have your MHL adapter, simply plug it into your Samsung Galaxy S9 or Samsung Galaxy S9 Plus.

To access this option, you will need an MHL adapter that is capable of your Samsung Galaxy S9 or Samsung Galaxy S9 Plus.

Access Screen Mirroring Via a Hard-wired Connection The SmartTV already comes with the Allshare hub capabilities. Take note that if you own a Samsung SmartTV, you would not need the Allshare Hub. Scroll down and select Screen Mirroring to turn it on.Connect your TV and phone to the same wireless network.If you have one, all you have to do is connect your Allshare Hub to your TV with an HDMI cable.You may only use this if you have a Samsung Allshare Hub.Access Screen Mirroring via Wireless Connection

Screen mirroring on mac to galaxy s9