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Article: Jolla unveils first smartphone running Sailfish OS, targets 2013 l
There´s something quite innovative being planned, or has been planned already. It´s that back cover. It´s interchangeable between the phones, and these covers have (undetermined) amount of memory built in. Something like a big SD card... So, if you change phones you´ll be able to transfer/carry all the data to the new one, and that includes the setup of Sailfish OS.
That is very interesting.