Originally, S30 was supposed to have just one menu key, but a second one was added with the release of the Nokia 1110. All S30 devices do not have a 5-way d-pad, only a 4-way d-pad, except the Nokia 1100 and Nokia 2100 which just have a 2-way d-pad.
List of devices
The following is a list of Series 30 devices released by Nokia: