NDTV MAY-2020 Citizens using only landlines and feature phones will be able to avail of the facilities under the Centre’s Aarogya Setu app, the district administration said in a statement on Friday. While the Aarogya Setu app was previously available only to iOS and Android-enabled smartphones, its Interactive Voice Response System (IVRS) version was rolled out by the Centre on Thursday and will be implemented nationwide at a district-level.