The investigators have shown that with training, supervision, and accountability, CHW home visits are effective in a successful randomized controlled trial (RCT) conducted in peri-urban townships in Cape Town, South Africa. CHW were trained to address HIV, alcohol, and malnutrition among all pregnant women in a neighborhood - to avoid stigma and to address multiple challenges concurrently. The visits significantly improved maternal and child outcomes over three years. Based on these results, the Philani Intervention Model served as one model for re-engineering primary health care for 65,000 CHW in South Africa. The Mthatha Provincial Government has agreed for the Philani Program to train, monitor, and supervise their already-hired CHW. This RCT will evaluate whether routinely implementing training and monitoring CHW behavior and MCH outcomes with mobile phones, and providing data-informed supervision, will result in CHW becoming more effective. Stellenbosch University interviewers will independently assess outcomes of each mother at pregnancy, and of the mothers and infants within two weeks of post-birth, 6 months, 15 months, and 24 months later. The primary outcome will be maternal HIV/TB testing, linkage to care, treatment adherence and retention in medical regimens, depression, and parenting; and her child's physical growth, cognitive functioning, and behavior adjustment.