Inclusion Criteria:  Intervention study:  Provision of signed and dated informed consent form Declaration of willingness to comply with all study procedures and availability during the study Age 18 years old or older Male sex designated at birth Identify as trans woman, woman or another gender identity not associated with being a man Desire to join the mSN intervention Access to a cell phone compatible with social networks (smartphone) to participate in a technology-based intervention or willing to use a study provided cell phone Speaks English or Spanish Living in San Francisco Bay Area Attend a clinic within the San Francisco Department of Public Health  Potential participants living with HIV must meet the following criteria:  Documented diagnosis of HIV infection Have missed one recent HIV care appointment or have a detectable viral load Have not initiated or are regularly engaged in mental health and/or substance use services Screen positive for having an alcohol disorder OR drug misuse OR screen positive for psychological distress.  Exclusion Criteria:  Participation in another intervention study to promote HIV care in the last year or participation in another study that prevents concomitant inclusion (co-enrollment) Any health condition that, in the investigator's opinion, makes it impossible to participate in the study or impairs the potential participant