Is this TV good for gaming?

It handles casual console play at 4K 60Hz, but the 60Hz panel and lack of HFR or variable refresh rate make it a poor fit for fast competitive games. Input lag is not a strong point either.

Does it have a smart TV interface?

The 50PUL6643/F7 is a basic 4K set without a full smart platform. Plan on adding a streaming stick or box through one of the HDMI ports for Netflix, YouTube and similar apps.

Can I mount it on a wall?

Yes. It is VESA mountable, so a standard wall bracket or articulating arm works. Check the bracket's weight rating against the TV before mounting.

How many devices can I connect?

There are three HDMI inputs plus a USB-A port and an Ethernet jack. That covers a streamer, a console and a cable or satellite box, with USB for media playback.

Does it pick up free over-the-air channels?

Yes. The built-in DVB-T tuner handles antenna broadcasts, so an indoor or rooftop antenna is enough for local channels without a separate tuner box.

Is it a good upgrade from an older 1080p TV?

If you mainly watch streaming and broadcast TV in a bright room, the jump to 4K is noticeable. If you care about deep blacks or smooth sports motion, a set with local dimming and a 120Hz panel is worth the step up.