These are some common tools used to work on this device. You might not need every tool for every procedure.
The LG VX9800 was manufactured by LG in the third quarter of 2005. To verify that you have this phone, remove the battery and find the silver silver sticker put there by the manufacturer. Under model number it should say VX9800.
This phone was replaced by LG with the upgraded enV in late 2006. The enV upgraded the camera from 1.3 to 2.0 megapixels and cut down on size and weight.
Figure out how to change your faceplate with Cell Phone Forums.
Download the LG VX9800 User Manual.