Professors become increasingly upset at students’ cell usage Lexy Garcia / Reporter Cellphones seem they’ve become an extension of ourselves. Some 94 percent of community college students are wireless Internet users and 85 percent of these users have a cellphone, according to the Pew Research Center. The amount of students looking down at screens has been increasing, especially this semester, said Roger Steinberg, associate professor of geology. With almost his entire class looking down on a recent day, Steinberg realized hardly anyone was listening to what he was saying. The first week of November, Steinberg decided he needed to start…