The opt-out feature is not available for the SMS service. The SMS notification will only be sent to individuals in settings which pose a higher risk of transmission. We seek everyone’s cooperation to monitor your health closely as a precaution if you receive the SMS notification, as it means you might have had some contact with an individual that had tested positive for COVID-19. The nature of the contact was likely not sustained enough for MOH to have contacted you, but it would be good for you to monitor your health. This will help control the spread of COVID-19, and keep your loved ones safe.