Look at the K400 Plus by logitech.
If you want to test ahead of time, just test with a PC USB mouse and keyboard.
And of course not all apps work with this. It's well discussed and is a warranty issue if you feel it's a bad bug.
I am wanting to purchase a wireless keyboard for my Samsung TV. The model number is UE50MU6120K and its the 50" model.
I've had a google but I can't really find anything.
Any recommendations/advice would be great because I don't want to buy one, only to find that it doesn't work.