Ostracism dramatically reduces psychosocial well‐being. Many studies have examined ostracism within digital environments, but to our knowledge no one has examined ostracism as manifested through public cellphone use. Experimental data revealed that public texting or reading on a cellphone was less ostracizing to copresent others than face‐to‐face ostracism but more ostracizing than face‐to‐face inclusion. Though cellphone use was somewhat ostracizing it did not prompt negative psychological effects, supporting the notion of cellphone taken‐for‐grantedness. Exceptions were found for those reporting phone technostress; these individuals were negatively affected by exposure to someone reading on a cellphone. Findings extend the ostracism paradigm to a new context and support research on the importance of attitudes and norms in shaping the effects of public cellphone use.