Lg vx9400 disassembly instructions or

1. Flip the screen side ways and then look at the back.
2. There are 4 screws, one in each corner, remove them. (that is, the corners of the back of the screen)
3. Pop off that front cover of the screen.
4. carefully remove the screen, *note: it may seem like you shouldn't be able to pry it up, but all that's holding it down is glue, so just make sure to be careful and not break the screen while prying it up.
5. disconnect the little cable on the back of the screen.
6. Pop out the little speaker at the top (it's just held in by a magnet).
7. Remove the 4 screws around the hole.

And then back should then be able to pop off, but it does require a little prying, because there are some clips holding it together. From there you should be able to do the rest.