This upgrade contains infrastructure upgrades. Android The pHi-Tech app now requires Android OS 8.0 or later. Related ArticlesAndroid Version 1.3.46 / iPhone version 3.0.60Android Version 1.6.5 / iPhone version 1.6.5Android Version 1.7.3 / iPhone version 1.7.3Android Version 1.7.4 / iPhone version 1.7.4Android Version 1.7.5 / iPhone version 1.7.5