Replace the plastic bracket that holds the earpiece speaker opening mesh in place against the inside of the front panel assembly compatible with the iPhone 7.
Replace the gasket that seals the face of the earpiece speaker to the back of the earpiece speaker dust proof mesh bracket on the inside of the front panel assembly compatible with the iPhone 7 model A1660, A1778, A1779, A1780.
iPhone 7/7 Plus Lightning Connector Grounding Spring Contact
Replace the spring contact that grounds the lightning connector assembly to the back of the home button bracket compatible with the iPhone 7 and iPhone 7 Plus.
Replace the metal plate between the LCD and the other internal parts compatible with the iPhone 7 model A1660, A1778, A1779, and A1780 smartphone. This plate diffuses excess heat, and protects the back of the LCD.