Remove your back cover, battery, sim and memory card
Starting near the bottom of the phone, lift the bezel away from the phone. It just clips on and off
With the bezel removed your phone should look like below. Remove the six screws you can see
Turn the phone over and starting near the top of the phone, run something like a credit card around the join of the front cover to release it
Your phone should now look like below. The keypad membrane needs to be levered up at the two points circled below.
You now have access to two ribbons. Release each ribbon by flicking the black/brown latches back and then pull each ribbon away.
Now slide your plastic tool underneath the LCD screen to release it.
You should now have the LCD screen removed. Reverse the whole procedure for reassembly