From what I have read Orange seem to be pretty good with returns, one person claiming that they replaced their phone with a new OLED one when he admitted breaking the screen.
I have read about the touchscreen issues and then the issues when a person replaces the screen / digitizer themselves.
SS RLS5 is supposed to help those with touchscreen issues. But I'm not sure it is the same with those with replacement digitizer problems.
Do you happen to know if the phone you took it from was the same revision etc as the phone you put it into..?
no im afraid i have no idea.