Ericsson R380

The display was a black and white touchscreen, partially covered by a flip which, when opened, reveals a large wide display. For that reason it can be considered the clear forerunner of the popular P800/P900 series of smartphones. It predates the UIQ user interface which runs on those later phones, but again, the heritage is clear. ==Software==

The R380 ran the EPOC Release 5.1 operating system (EPOC R5u, a Unicode version of EPOC R5), which can thus be considered the first Symbian OS device. It uses a sophisticated user interface that originated as 'Emerald', one of the device family reference designs (DFRD) that was planned by Symbian Ltd. However users could not install their own software on the device. The phone and the software was developed at Ericsson's lab in Kista, Sweden. The user interface (UI) was developed at Ericsson's Software Applications Laboratory in Warrington, UK. The UI was built using an in-house developed library called the Ericsson Component Kit (ECK). At introduction, the R380s pricing was around US$700 (compared to the T28s at US$500), and the device was never network-locked. ==See also==