Connecting and controlling your phone with a Smart TV is effortless with the Samsung Smart View app. It allows you to enjoy content stored on your mobile device and computer easily on your Samsung Smart TV, as well as control the TV with your mobile device.
First, let's introduce you to the features of Smart View:
1/ Remote TV Control Feature:

For devices with 'Infrared' support, controlling your TV becomes simpler. However, if your smartphone lacks this connection, don't worry, SmartView will assist you.
2/ Stream content from mobile devices:

Connect your mobile device to the TV and select videos, images, and even music. Your content will be instantly streamed on the TV.
3/ Create playlists:

4/ Stream content from computer:

Next, I'll guide you on how to connect your phone to a Smart TV as follows:
Step 1: First, you'll connect the devices to a Wifi connection:

Step 2: Download Samsung Smart View from the App Store, Google Play, or Samsung Galaxy Apps.

Step 3: Launch the app and follow the steps to set up Smart View.

Note: Supported Devices:
On Smart TV:
2011LED D7000 and above, PDP D8000 and above.2012LED ES7500 and above, PDP E8000 and above.2013LED F4500 and above (except F9000 and above), PDP F5500 and above.2014H4500, H5500 and above (except H6003 / H6103 / H6153 / H6201 / H6203).2015J4500, J5500 and above (except J6203).2016K4300, K5300 and above.
On Mobile Devices:
Android OS 4.1 and above.iOS 7.0 and above
On PC (Computer):
Operating system: Windows 7, 8, 8.1, 10 (supports 32/64 bit).Processor: Intel Pentium CPU 1.8 GHz and above (Intel Core 2 Duo 2.0 GHz and above recommended).RAM: 2 GB (recommended).VGA: 1024 x 768, 32-bit and above.
Wishing you all the best.