A method of authenticating access of an electronic device to an application server based on a subscriber identity module (SIM) associated with the electronic device. The method receiving an authentication challenge from an application executing on the device by a SIM application toolkit (SAT) executing on the device, transmitting a random number and an authentication value of the challenge to a SIM of the device by the SAT, receiving a response from the SIM by the SAT, transmitting an authentication response to the application by the SAT, where the authentication response comprises the response received from the SIM, generating an application key by the SAT based at least in part on the response received from the SIM, and transmitting the application key to the application by the SAT, whereby the application executing on the electronic device establishes a communication session with an application server via an access communication network.