We are aware that Android OS recently changed how the Cast function works in SmartView. We have developed a workaround for this issue which will allow you to connect the Android device to Reflector 4 using Google Cast. Below are steps to a workaround that can help you to connect your Android device to Reflector 4.
Step 1 (optional)
Download and install Reflector on your Mac or Windows computer. Make sure your computer and Samsung device are on the same wifi network.
Download and install Quick Settings on your Samsung phone or tablet. It’s free.
On your Samsung phone or tablet, open the Quick Settings app and select Multimedia.
Tap Cast and then select Enable tile. If you see a window describing the Quick Settings panel, tap OK.
Pull down the extended view of the Quick Settings tray: Swipe down twice from the top of your device screen. Ensure the tray is pulled down all the way and you can see more than one row of icons.
Tap the three dots icon to display more options.
Select Button order (this may also be called Edit buttons).
The Cast icon will now appear as an option. Tap and drag the Cast icon into the tray. Place it where it’s most accessible to you.
Tap Done at the bottom of the screen to save these changes.
The Cast icon will now remain in the Quick Settings tray. You can tap Cast whenever you’d like to screen mirror and cast your Samsung device to a Reflector-enabled computer, smart TV, smartspeaker or other wireless receiver.