Thanks good peoples.
Got the old glass off
125c as low as my H.Air gun would go and a Teflon coated ceramic Knife (didn't heat up) so no burnt digits.
Surprising bit was how easy it was to pull down.
I fixed my daughter's Mobile last year and it all clipped together and was a real pain.
Again thanks for the advice this has to be the best Electronics FORUM around must be because it's Australian