LCDDocters customer only:  New promotion if you buy 2 from LCDoctors we will ship you 3 ICs.  Brand new and sealed OEM IC for the iPhone 4 Logic Board Backlight Circuitry Repair. The IC comes in its original packaging tape and ships within a protective bubble wrapper via USPS First Class Mail Flat Envelope (Same business day or the next). please contact us LCDoctors though amazon if you have any question about the listing or the item. No Backlight or Dim Screen fix for iPhone 4 Apple iPhone 4 backlight repair part, IC controller replacement This is another common issue people have been dealing with. It just so happens that the LCD backlight on a huge number of 4 iphones have gone dark and never come back. Due to water damage the this IC often get short out. The solution is to replace this on your water damaged no back-light phone and it workes 90% of the time. One thing I have to note though, this may not work for all instances since the backlight and the LCD of the phone is controlled by a number of things and circuitry. However it is well worth a shot! New IC In Package! Busted IC Removed! New IC In! Repaired working iphone backlight! please contact us LCDoctors if you have any question about the listing.  please contact us LCDoctors if you have any question about the listing.