Unless you are already a vaxtard, you won't get the SMS 'reminders', because your details are not registered in the MOH database.
By the way, they are not 'retarded', just pure evil. Sinkies should really wake up from their belief that the PAP regime is bevenolent in nature, a few mistakes and blunders along the way but overall still moving in the correct direction, always looking out for the best interests of the people etc. Everything they do, even the simple act of constructing a sheltered walkway along a certain road, is not for your benefit.