It is an infrared LED on the phone. You download an app and you can remote control any TV (or whatever) with it. On my last phone, you could look at the TV brand and enter that in the app, then you could control the TV without any more knowledge. I used it in waiting rooms and areas to turn on the Closed Captioning for the TVs in said waiting areas. It was fun. Of course you could often change channels too.
Phone companies are now finding it too expensive to provide useful elements on their phones (replaceable battery packs, headphone jacks, Blaster LEDs, etc). My previous phone had ALL of that.
You’re ignoring this member’s posts.