Nokia 8110 (The Matrix, 1999)
Okay, it may not be the most impressive gadget on this list, with a feature set including, er, SMS and five hours of talk time. But when Neo activated its spring-loaded cover, everyone suddenly needed a phone that snapped open with a ca-chik! sound. Unfortunately, this wasn't it – the spring-loaded mechanism was added to the 8110 by the props department, and eager buyers had to wait until the release of the Nokia 7110 before they could mimic Keanu Reeves.