If you dont want to actually buy a new phone, there are plenty of second hand ones in the smaller, independant phone shops. You may well be able to get a direct replacement for your damaged phone and thus avoid having to learn how to use a new one with different controls. Also, your old phone may well not be beyond repair. Replacement cases are less than £5 and even a damaged screen can be replaced economically. As the phone still works , even though it is looking a bit battle scared, try this option before paying out for a replacement.