下载: USSD Codes APK

android.permission.CALL_PHONE:
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.
android.permission.INTERNET:
Allows applications to open network sockets.
android.permission.READ_PHONE_STATE:
Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.