need to back up iphone with no screen. need help to work out what state my phone is in.

[sally_sandy]

Hello.
my 64gb iphone's screen died and I have no back up.
I tried to do a back up to itunes , the computer found the iphone and I clicked backup and it didnt seem to make any progress for hours so I cancelled it.
now I plug it in and the computer wont detect it. I can put the iphone into DFU mode and itunes detects it. I then hold both home and sleep in hoped to get it out of dfu mode and it just disconnects from itunes (reboots ?) but doesn't reconnect. if the screen was on now what would I see ? has the phone booted up ?
how can I fix this problem ? thankyou

 

[superbovine]

If your touch still works tell Siri to turn on voice over. It will tell what you are touching. If that isn't work by a keyboard an iPad.