King of the Hill aired from '97 to '09.

... There are too many episodes for me to be able to pick out exactly which one this is from, what year it aired in...

But uh, fairly commonplace, reasonably affordable smartwatches, with the kind of functionality described... didn't really become a thing until roughly the mid '10s.

Yes, there were earlier 'smartwatches', or things that could be argued to fall into that definition... but they were extremely niche, quite pricey.

Apple's first smartwatch didn't come out till 2015.

Smartphones, with touchscreens, did not really even exist at a reasonable price point, with significant numbers of people using them untill the latter third or quarter of KotH's seasons.

Like I still remember having some clamshell, phyiscal keyboard 'smartphone' in 08 - 09.