Question:

Is there a longer HDMI cable available for purchase than the 3 meter one that came with my TV?

Answer:

Yes, you can purchase a Part # BN81-13268A, which is a 15 ft (4.57 meters) HDMI cable specifically designed for 2016 and 2017 TV models with One Connect Mini. This cable provides an even greater reach than the standard 3 meter (9.84 feet) cable included with your television.