Allows the application to control the phone features of the device. An application with this permission can switch networks, turn the phone radio on and off and the like without ever notifying you.
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.
directly call phone numbers
Allows the application to call phone numbers without your intervention. Malicious applications may cause unexpected calls on your phone bill. Note that this does not allow the application to call emergency numbers.
send SMS messages
Allows application to send SMS messages. Malicious applications may cost you money by sending messages without your confirmation.