No, the iPhone 6 and the iPhone 6 Plus do not include an IR blaster, despite rumors to the contrary. The IR blaster (or infrared blaster) makes it possible for a smartphone to act as a universal remote control for devices such as a TV, Blu-ray player, or set top box.
Keeping this in consideration, what is the use of IR Blaster?
An infrared blaster (or IR blaster) is a device that emulates an infrared remote control to autonomously control a device that is normally controlled only by remote control key presses.
What is the IR blaster on Sony TV?
An infrared blaster (IR sounds better and less techy) is a gadget that accepts some sort of input from your remote and "blasts" it via infrared to the IR-compatible device you're trying to control. A TV's IR blaster allows it to "communicate" with another device, like a cable box.
Do most smartphones have an infrared?
It is not even close. An IR blaster built into a phone allows the handset to double as a universal remote control for a number of electronic devices we have around our homes. Not all smartphones have a built-in IR blaster, however, which is why we thought we'd make a list of all the cool phones that offer one.