Patent ID: 7865212

Claim:
A method in a first mobile communication device for use in securely transferring user data associated with a user account from the first mobile communication device having a first client application program to a second mobile communication device having a second client application program of the same type as the first client application program, the user account being associated with user account data which includes an encryption/decryption key, the method comprising the acts of: maintaining data synchronization with a host server over a wireless communication network for user data of a host application program associated with the user account, where the user data is communicated over the wireless communication network in an encrypted format in accordance with the encryption/decryption key; for the data synchronization: regularly causing the user data associated with the user account to be stored in memory of the first mobile communication device in a decrypted format for use with the first client application program; and regularly causing a copy of the user data to be stored in memory of a removable memory card of the first mobile communication device, in an encrypted format in accordance with the encryption/decryption key, for use in securely transferring the user data to memory of the second mobile communication device for use with the second client application program.