Chosen Solution

Basically I have two iPhone 6S. One is completely trashed, the other one is good but the screen doesn’t seem to work. I opened the trashed iPhone and removed the front panel: the battery inside seems to be leaking, and I don’t really know what this phone has gone trough. Do you think I have a good chance to swap the two front panels? This is the one that could work. http://i66.tinypic.com/21j52ft.jpg EDIT: Can I clean the connector with the alcohol too?

When you clean the screen metal plate with home button extension cable, make sure you REMOVE it first from the screen to avoid damaging the screen with cleaning liquids when cleaning the metal plate. I use disposable cloths, brush with 99% isopropyl alcohol or even water / distilled water (to dampen cloth) to clean these kinds of things. Of course don’t let conductive liquid where it shouldn’t be like on the screen or logic board for example.