Allows application to modify global audio settings such as volume and routing.
read phone state and identity
Allows the application to access the phone features of the device. An application with this permission can determine the phone number and serial number of this phone, whether a call is active, the number that call is connected to, ect.
display system-level alerts
Allows an application to show system alert windows. Malicious applications can take over the entire screen of the phone.
prevent phone from sleeping
Allows an application to prevent the phone from going to sleep.