The application store is as the name suggests, an application store. Here, one would get free and paid apps from the store, and download those applications to their device. Even though the OS? will support .deb files, there will be a store to help the user find all of the programs they wish to have. RCS? will be supported by the encrypted GSMA profile for sending RCS messages on a cellular phone. Otherwise, the handhelds will use K-Messages.