Background: Adequate care and support during the postpartum period have been linked to positive health behaviors, and health outcomes in high risk populations such as low-income mothers. While during pregnancy, women utilize varied sources of health information, including in person and online sources, many of these do not extend significantly into the postpartum. This study aimed to assess low-income mothers’ perceptions of their postpartum information needs; describe their information seeking behavior; and explore their use of mobile technology to address those needs. Methods: Exploratory community-based qualitative approach. Interviewees were recruited among clients of community partners and had children aged 48 months and under. Ten women completed in-depth interviews. Interviews were transcribed verbatim and coded by three researchers independently. Narratives were analyzed along predetermined (etic) and emergent (emic) categories. Results: Establishing breastfeeding and solving breastfeeding problems were central postpartum concerns. Interviewees reported almost exclusive use of mobile phones to access the Internet. Mobile applications were widely used during pregnancy, but were not valuable postpartum. Online information seeking was mediated by default phone search engines, occurring over short, fragmented time periods. College graduates reported searching for authoritative knowledge sources; non-graduates preferred peer forums. Conclusions: Low-income postpartum women rely on their smartphones to find online infant and self-care information. Changes in searching behavior and multitasking mean information must be easily accessible and readily understood. Knowledge of page-rank systems and use of current and emergent social media will allow health-related organizations to better engage with low-income mothers online and promote evidence-based information.