Translating step 9
The motherboard of the HTC One is pretty much encapsulated within copper shielding. Two flat pieces of copper adorn each side of the motherboard.
Here's the thing about copper shielding. It dissipates heat and provides electrical grounding. However, copper shielding is a pain to deal with during reassembly—kind of like trying to straighten out aluminum foil once it's been crinkled.