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Some old Samsungs have it as well, such as the Galaxy S5.

You can do it with a rpi, ir diode and resistor even. The tool for sending and receiving ir commands is called lirc

Huawei and Xiaomi phones have IR blasters as well. I always try to buy phones that have those, because A) "i lost the remote" and B) "shut off every TV at the store" is hilarious.

The first device i had that had this was a Palm, and it wasn't like "here's a remote control" it was "this 1 button will cycle every known TV IR code for the power button." Someone eventually released an actual IR blaster app for Palms, though.