Google has just launched a new app called “Device Assist” for Nexus smartphones, Android One and Google Play devices. The app which will work only if you are running Android 5.0 Lollipop will provide tips and proactive troubleshooting to help you get the most out of your device and if you own a Nexus or Google Play device you can get easy access to live Google support.
Device Assist can be download from the Play Store or installed manually by downloading the com.google.android.apps.cavalry-81089711-21-minAPI21.apk apk file. The app can only be installed on Nexus devices, Android One devices or Google Play edition devices and must run Android 5.0 or above (Android 5.0.1). You can download the Device Assist.apk