Answer to: Instructions for replacing glassHi, The Nokia Lumia 1520 display is glued to the digitizer and glass. Also it has an unusual rubber frame around it. Except for the rubber frame it's the same procedure as for every other glued display assembly. However I don't know if you need LOCA/OCA in order to install the new glass. If you do then you need the proper equipment and skill.
Answer to: vibration no longer working after screen replacementSame problem here. The square ribbon cable which the vibrator resides on could have been slightly damaged in my case. Or it was one of the motherboard connectors that was bent. It should be possible to test the vibrator by giving it some low voltage.