[Q] Touchscreen does not respond (exept home button) topic

Hi,

My friend has an LG G2 and now has the following problem:
The touch screen does not work anymore. That means, I just get to the lockscreen but not any futhur.
The only button (with visual feedback) that still works is the Home button.

Actually I would have made a factory reset but my friend wants a backup of his data. But I cannt make a backup because I did not get past the lockscreen.

Is there anything that I can do?
(possibly root?)

Many Thanks
zoker

BTW: There is no garantie any more...