Check the phone's battery charge level and make sure that it is over 50 %, this will prevent the device from switching off in the middle of the installation. (android.gs)
Make sure that your device's battery has enough power left so that it won't switch off in the process. (android.gs)
Especially in the age of social media, a person's brand doesn't switch off when he or she leaves the office. (businessinsider.com)