USB is an Android app developed by P26 (2 Nguyen The Loc, P.2, Tan Binh, Ho Chi Minh city, Vietnam). Others apps created by P26 are: BlackList.

USB first became available on 04 Jan 2012. It is estimated that USB has been downloaded between 100000 and 500000 times from the Play Store.

USB 2.30 requires the following permissions:

Allows applications to access information about networks.

Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.

Allows applications to change network connectivity state.

Allows applications to open network sockets.

Allows modification of the telephony state - power on, mmi, etc. Does not include placing calls.

Allows an application to see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether.

Allows an application to read the user's call log.

Allows an application to read the user's contacts data.

Allows an application to read from external storage.

Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.

Allows an application to read SMS messages.

Allows an application to monitor incoming MMS messages.

Allows an application to receive SMS messages.

Allows an application to send SMS messages.

Allows access to the vibrator.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.

Allows an application to write (but not read) the user's call log data.

Allows an application to write the user's contacts data.

Allows an application to write to external storage.