In the present implementation study, we aim to document the experience of implementing integrated, decentralized primary care in rural Bangladesh, including components of healthcare provider training, mHealth, decentralization with task shifting, and community-based care, and to generate data on the effectiveness and cost-effectiveness of the multicomponent integrated care as compared to usual care and to mHealth intervention alone. We will also Investigate the factors that explain how the interventions influence hypertension and diabetes management and explore barriers/facilitators to delivering and sustaining intervention. We will conduct mixed-methods research to understand how the intervention influences treatment and prevention in this patient population. Particularly, we will assess lifestyle changes (i.e., smoking, dietary salt intake, physical activity, alcohol consumption), and burden for patients (e.g., waiting time, travel-related cost) at individual and community level. Qualitative data will shed light on facilitators and barriers to hypertension and diabetes prevention and control from the perspectives of patients (and their families), primary care providers, public health officials, and other stakeholders. Additionally, we will undertake a health economic evaluation of the interventions for primary care systems. A comprehensive evaluation of cost and effectiveness will be important for the models tested, providing necessary evidence for policymakers and stakeholders to scale up the interventions. We hypothesize that compared with usual care, the multicomponent decentralized primary care will improve all steps along hypertension and diabetes care continuum. On the other hand, we hypothesize that the mHealth intervention alone (Simple App) may improve BP and glycemic control compared with usual care but will have a limited impact on rates of screening, diagnosis, and treatment. We also hypothesize that the multicomponent integrated care will lead to a higher treatment success rate relative to mHealth intervention alone.