The Panasonic EB-G520 mobile was released in 1998.
It featured a four position navigation key in which the up/down and left/right movements allowed you to scroll through menu items, options and system controls for screen brightness and speaker volume.
The address book stored telephone numbers and associated names in the SIM card with speed dial access. Call timers recorded the duration of the last dialled call and a cumulative total. A vibrating ring tone option was also included and the G520 could both send and receive SMS text messages.
Some information courtesy of Nigel Linge & Andy Sutton, the authors of 30 Years of Mobile Phones in the UK (Paid Link)