Impractical Design?
To overcome these problems I am wondering about whether to cut away most of the elastic so that there are only short sections that would retain the phone at the top and bottom, avoiding any contact with the buttons.
A further shortcoming seems to be that there are no holes in the plastic cover through which sound would pass when answering a call quickly without struggling to remove the phone from the holder.
Given that from the publicity this appears to be a genuine Nokia accessory, I am surprised that more thought has not been given to the ergonomics of the design!