2. Google Cast
VerdictMake sure that your phone has an IR blaster. Most of the apps will not function otherwise. If you have lost the remote for your TV or other devices and getting a spare one is a costly affair, then get an IR remote controller app. And the apps save plenty of your time, and it is very convenient as you can now control all the devices using a single controller.
Many of the apps also allow content from your phone to be played on TV so that you can enjoy all the action of a larger screen with better audio experience. Now that you have reasons go to the Google Play Store and get one!