Chosen Solution
I repaired the backlight replacing FL4211, initially everything worked fine … but at the time of closing the device did not start anymore ‘and itunes gave me this error 0 × E8000015 then I put in dfu restoring solve the startup problem but I do not see again nothing on the display. Check again resistance on lcd connector, backlight voltages, diode, everything ok .. Now I wonder what could have happened ….. If the backlight circuit is ok, then what could be blackscreen ??? I state that (to finish earlier) I was wrong to work on the card inserted in the body
The backlight on my iPhone 6s is not lighting up
