The overall objective of this proposal is to implement and rigorously test an existing mHealth care engagement intervention, PL4Y, in a six clinic network in Texas. The investigators will use the Exploration, Preparation, Implementation, Sustainment (EPIS) framework to inform a type 1 hybrid study, assessing effectiveness of PL4Y alongside measures of acceptability, feasibility, and sustainability. The study has two main components:
* A cluster randomized longitudinal staircase trial across six clinics in Texas
* Qualitative assessment, using semi-structured interviews and focus groups, of acceptability and feasibility of PL4Y implementation in the clinics
