Purpose The purpose of this study was to examine how cost, network and technology factors affect the use of mobile technologies for clients’ care in internal medicine department in Nigeria’s premier teaching hospital, the University College Hospital, Ibadan. Design/methodology/approach The study adopted a survey design covering a cross-section of medical doctors, pharmacists, nurses and medical laboratory technologists in the Department of Internal Medicine. A questionnaire guided data collection. Findings There is a high level of consciousness and use of mobile technologies for meeting healthcare needs of internal medicine clients in the University College Hospital, Ibadan and medical practitioners are deploying the technology most. However, there is no similar evidence of consciousness and use of wearable health-care technologies and solutions. The hospital makes some provision for mobile technology support for relevant medical staff and purposes. However, about three in 10 of the respondents reported that they use their own funds to recharge hospital-provided mobile phones means. Research limitations/implications The study focusses only on one institution but the result reflects the situation in other hospitals, University College Hospital, Ibadan, Nigeria being the major supplier of health and medical human resources in the country. Practical implications The hospital requires undertaking institutional assessment of mobile service need and consumption for clients’ care and thereafter make adequate provision to match the need. Furthermore, the institution could work out various forms of collaboration with mobile technology operators in the country to subsidise the cost of the use of telephones for clients’ care as part of their corporate social responsibility. Social implications The institution could work out collaboration with mobile technology operators in the country to subsidise cost of mobile client care as part of the philanthropic and corporate social responsibility of telecom companies. Originality/value This study focusses mainly on internal medicine and has implication for a more proper understanding of adult deployment of mobile phones for client care.