For versions of Android 7.1 or higher we guarantee that the app works well, but the app is installable from version 5.1. However, with an older version than 7.1, we can not guarantee that the app will work perfectly. We recommend using a device from the 4 most famous brands: Samsung, Huawei, HTC, LG and with a medium quality device. Low budget devices have a weaker battery and performance so the app can not work as well.