SK Telecom showed at the MWC 2010 the Android SIM, a standard SIM-sized card that packs a processor, 1GB storage capacity, Android OS, apps and user data. This new all-in-one SIM technology allows phone makers to produce just dumbphones with display, keypad, camera and users simply install the SIM and get all their data back.
Also introduced is the SIM Theme Package that uses similar technology to store themes elements for your cellphone as well as music, images..etc.