Ternius MobileOS 1

The first version of MobileOS, also known as just MobileOS or colloquially called as MobileOS 1, was released on May 11, 1997 by Ternius, used in old Ternaphones from 1997 to 1999. It is the first version of MobileOS.

Features

 * Monochrome display.
 * Messages, inbox and phone applications.
 * WAP Mobile Internet