The last movie I watched in the treatre is Clint Eastwood's "Sully" and I distinctly remember the main character using a chronologically appropoaite Samsung flip phone and that single prop instantly dates the movie to the first decade of the 20th century. Just as much as Pulp Fiction is locked in the early 90s with Vincent Vega pulling the antenna out of his Motorola brick phone in one exaggerated motion, albeit these choices are probably intentional.
Some long running manga series take another approach by quietly giving its cast the latest gear despite the timeline moving at a much slower pace.[1] It works until you start revisiting the earlier episodes and get reminded of how old the series really is with its depiction of personal electronics.
[0]: http://tvtropes.org/pmwiki/pmwiki.php/Main/UnintentionalPeri...
[1]: http://anime.stackexchange.com/questions/77/how-much-time-ha...