Chosen Solution
I’m currently replacing the screen and LCD of a 6s. After replacing the screen with an aftermarket screen the screen was blank and the phone was detected by iTunes. I figured the screen was faulty and tried another, same thing. Tried one last time with another screen (3 screens total) and still nothing. Put the phone back together with the OEM screen (cracked) and then another original apple screen (also cracked) and the phone functions as usual with both. Any ideas?
This is either a coincidence of bad screens in succession, but more likely you have a damaged backlight filter from connecting a screen without first disconnecting the battery. Replace backlight filter to solve–or send out for a microsolderer to do that job.
