Persons living with HIV (PLWH) in the US smoke cigarettes at approximately triple the rate of the general population, and tobacco use has emerged as a leading killer in this highly vulnerable group. Cell phones offer a modern, broad-reach platform to deliver tobacco treatment, although this strategy has not been explored in PLWH smokers. We conducted a cross-sectional survey on cell phone use behaviors in a convenience sample of PLWH smokers attending an urban HIV-care clinic. Fifty subjects completed the survey. Sixty-two percent of participants had smart phones. Android phones were four times as common as iPhones and 28% of subjects had multiple cell phones. Most had both data plans and unlimited texting. The majority received and sent text messages at least daily. Forty-eight percent searched for health information on their phones, and 53%, 68%, and 56% used their cell phones to check email, listen to music, and play games at least daily, respectively. There were some significant differences in cell phone usage patterns by age, race, and educational attainment. Overall, these findings support the development of mobile health (m Health) tobacco treatments targeting PLWH smokers.