Jimmy Fallon's web series "Downtown Sixbey" combines a Downton Abbey spoof with a backstage drama of Late Night joke writing. As a result, they communicate with each other via telegram and observe tea time, yet they're sitting around writing Kardashian jokes.
Used as a gag in a Todd in the Shadows review where Todd points out a pay phone is an anachronism in 2012, yet 2012 saw a song about this "antique" item.
Despite supposedly taking place in ancient Thebes, Oedipus In My Inventory shows the city containing skyscrapers, medieval castles, log cabins with glass windows, and shepherds with sunglasses.
This is one of the points of Hitler Rants, which in their classic form feature Hitler, in his bunker during World War II, using Internet-age technology and complaining about some modern-era controversy.
In RWBY, people who fight with swords and other antiquated melee weapons are seen also making use of portable music players, digital tablets and VTOL aircraft. Demonstrated in the "Black" trailer, which pits a ninja and her katana-wielding partner against a horde of robotic mooks on a futuristic-looking Cool Train.
The Evil Empress Guide seems to be this with the various different guidelines. So, our Empress has a blaster at her disposal (guideline 10), can contact the men in her thrall via radio (45), considers hiring a PR firm (48), uses webcam sites to manipulate the population (49) and forbids her Beautiful but Innocent Daughter from shoppng at the mall (56)... but still equips her Amazon Hordes with such "sophisticated weapons" as 10' pikes and longbows (24). As it's a genre-savviness guide meant to cover multiple settings, as well as not meant to be taken too seriously this is perfectly justified.