Why is the redial list not available?

The soft key “REDIAL” is only offered in the display if there is any entry in the list.

If you have deleted the list or not use the handset yet, the softkey is not visible.

If there is an entry in the missed call list you, the envelope is offered as the left softkey, in this case you have to enter the missed call list, or to press the green key first and then enter the redial list.