Do you have to buy cover for the logic board?
I don't know if you need covers for the bare logic board
苹果官方于2015年9月25日正式发售iPhone6S A1688/A1633机型。 此机型的修理方式与先前几代差不多, 需要螺丝起子及撬棍工具。 同时也适用GSM or CDMA/16, 64 or 123 GB/ 银色, 金色, 深空灰色, 玫瑰金色等机型。
Do you have the Logic Board exposed on the iPhone? If so then Yeah I would get it covered a static charge could kill the Logic Board and it could easily be killed. If you have the Logic Board out and exposed then I would place it in an Antistatic Bag to preserve it chances are that if its been exposed for any type of long term its already been damaged in one way or the other. Hope that helps..