The Motorola Ultra Classic was released in the USA in 1989 and is the equivalent of the European 8900X. The Mobile Phone Museum has two variants of the device. One is branded for the USWEST Cellular Network-now part of Qwest Communications International. The other is branded Cellstar.
The keypad layout is the same as the
Motorola 8500X except for the fact that the NAME key on the 8500X is replaced on the Ultra Classic with a LOCK key which, it is assumed, locked the phone's keypad. It is also assumed that the remaining keys performed the same functions as those on the Motorola 8500X.
Information courtesy of Nigel Linge & Andy Sutton, the authors of
30 Years of Mobile Phones in the UK