Controlling TV and set-top box- Today most Android smartphones are given IR Blaster (Infrared Sensor). With its help, you can easily control TV, DTH or set-top box. For this, you just have to download a universal remote app. This feature is already present in many brands like Xiaomi, Vivo and Huawei. Even if your phone does not have an IR blaster, you can control your TV with Wi-Fi based smart TV remote apps.
Google tv app for Android TV
Amazon Fire tv Remote App for Fire Stick
Apple tv remote app for apple tv
Air conditioner and other electronics- With the smartphone with IR blaster, you can also run devices like AC, fan, projector and sound system. In many apps, you have to choose the brand of the device and then your phone becomes a remote of the same device.
Gaming Controller- With the help of some apps, your phone can also become a gaming controller. If you do not have a console, then you can use your smartphone as a gamepad and play the game on PC or TV.