Smart XPay is an Android app developed by LG유플러스(LG Uplus Corporation) (서울시 용산구 한강대로 32 (주)LG유플러스). Others apps created by LG유플러스(LG Uplus Corporation) are: Customer Center, Paynow, U Box.

Smart XPay first became available on 12 Aug 2012. It is estimated that Smart XPay has been downloaded between 1000000 and 5000000 times from the Play Store.

Smart XPay 1.39 requires the following permissions:

Allows applications to access information about networks.

Allows applications to access information about Wi-Fi networks.

Required to be able to access the camera device.

Allows applications to change Wi-Fi connectivity state.

Allows an application to delete packages.

Allows an application to install packages.

Allows applications to open network sockets.

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 receive 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.

Allows an application to read or write the system settings.