I have the same problem with unworking touch / digitizer. But disconnecting then connecting the battery has no effect. So I try with a new LCD / digitizer assembly spare part and the touchscreen is still unresponsive... Anybody have a suggestion to help me ? Thanks.

It's wrong !

If you want to keep the bezel. Dont' remove the two 1.9mm Phillips #00 screws securing the vibrator TO THE BEZEL !

If you want to remove the chrome bezel away from rear panel, just insert a plastic prying tool between rear panel and bezel from the exterior.

To insert it, you can lift the bezel from the inside by using a second prying tool.

Once the first tool is in place, mantain it and turn around the rest of the iphone to remove bezel.

Two parts are just glued.