Thanks, yup, I got the back casing open and at that point, can't see that any cable got dislodged, so you may be right that the screen got damaged. In any case, I'm not really willing to go any further than that.
Next question is, before I send in for repair, I hope to, firstly, retrieve my data on the phone, and secondly, wipe them.
The problem is that without a screen, I can't seem to be able to do that. Connecting to PC via USB doesn't give me access to the phone storage and I suspect that it is because it is in lockscreen (pattern lock), and, I suspect the input (touch) part of the screen is also not working (i.e. not just output / display, because my pattern lock normally would give me tactile feedback).
Hope to get some advice on how I can get some access to the phone storage via USB
FYI, I have
Titanium Backup (just listing here for the heck of it - pretty sure it's useless in this case)