Methods and apparatus for use in switching user account data and operations between two different mobile communication devices

Methods and apparatus for use in switching communications associated with a user account from a first ("source") mobile communication device to a second ("target") mobile communication device are disclosed. The source and target devices may be possessed and/or owned by the same end user. The source device is initially enabled to maintain data synchronization with a host server over a wireless communication network via a first wireless transceiver (e.g. a cellular transceiver) for user data of an application program (e.g. an e-mail application program) associated with the user account. To enable the target device for the communications associated with the user account, the source device is operative to establish a programming session with the target device via a second wireless transceiver (e.g. a short-range wireless transceiver). During the programming session, the source device causes user account data (e.g. at least one encryption/decryption key for the data-synchronized communications) for the user account to be transmitted to the target device via the second wireless transceiver. Preferably, the user account data is encrypted based on a passkey for the programming session. The user data associated with the application program may also be transferred from the source device to the target device during the programming session, over-the-air or via a removable memory card such as a secure digital (SD) card. With this data, the target device is thereby enabled to maintain data synchronization with the host server for the user data of the application program associated with the user account. Advantageously, most if not all of the account switching steps may be facilitated by the end user "on-the-fly" without third-party involvement.