Objective To conduct a technical appraisal and qualitative interviews with short message service (SMS - mobile phone text message) users in mainstream health care. Design Observation of service usage followed by in-depth semi-structured interviews. Setting A National Health Service (NHS) general practice in Scotland. https://www.spidertattooz.com/OMEGA-Seamaster-Aqua-Terra-150M-220-10-38-20-02-001-p15833/